640113840

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{571}}^1$

素因数の和:769

約数の個数: 200

約数和(自身を含む): 2239977168

約数和(自身を除く): 1599863328

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 173, 180, 216, 240, 270, 324, 346, 360, 405, 432, 519, 540, 571, 648, 692, 720, 810, 865, 1038, 1080, 1142, 1296, 1384, 1557, 1620, 1713, 1730, 2076, 2160, 2284, 2595, 2768, 2855, 3114, 3240, 3426, 3460, 4152, 4568, 4671, 5139, 5190, 5710, 6228, 6480, 6852, 6920, 7785, 8304, 8565, 9136, 9342, 10278, 10380, 11420, 12456, 13704, 13840, 14013, 15417, 15570, 17130, 18684, 20556, 20760, 22840, 23355, 24912, 25695, 27408, 28026, 30834, 31140, 34260, 37368, 41112, 41520, 45680, 46251, 46710, 51390, 56052, 61668, 62280, 68520, 70065, 74736, 77085, 82224, 92502, 93420, 98783, 102780, 112104, 123336, 124560, 137040, 140130, 154170, 185004, 186840, 197566, 205560, 224208, 231255, 246672, 280260, 296349, 308340, 370008, 373680, 395132, 411120, 462510, 493915, 560520, 592698, 616680, 740016, 790264, 889047, 925020, 987830, 1121040, 1185396, 1233360, 1481745, 1580528, 1778094, 1850040, 1975660, 2370792, 2667141, 2963490, 3556188, 3700080, 3951320, 4445235, 4741584, 5334282, 5926980, 7112376, 7902640, 8001423, 8890470, 10668564, 11853960, 13335705, 14224752, 16002846, 17780940, 21337128, 23707920, 26671410, 32005692, 35561880, 40007115, 42674256, 53342820, 64011384, 71123760, 80014230, 106685640, 128022768, 160028460, 213371280, 320056920, 640113840]

約数ペア:

[(1, 640113840), (2, 320056920), (3, 213371280), (4, 160028460), (5, 128022768), (6, 106685640), (8, 80014230), (9, 71123760), (10, 64011384), (12, 53342820), (15, 42674256), (16, 40007115), (18, 35561880), (20, 32005692), (24, 26671410), (27, 23707920), (30, 21337128), (36, 17780940), (40, 16002846), (45, 14224752), (48, 13335705), (54, 11853960), (60, 10668564), (72, 8890470), (80, 8001423), (81, 7902640), (90, 7112376), (108, 5926980), (120, 5334282), (135, 4741584), (144, 4445235), (162, 3951320), (173, 3700080), (180, 3556188), (216, 2963490), (240, 2667141), (270, 2370792), (324, 1975660), (346, 1850040), (360, 1778094), (405, 1580528), (432, 1481745), (519, 1233360), (540, 1185396), (571, 1121040), (648, 987830), (692, 925020), (720, 889047), (810, 790264), (865, 740016), (1038, 616680), (1080, 592698), (1142, 560520), (1296, 493915), (1384, 462510), (1557, 411120), (1620, 395132), (1713, 373680), (1730, 370008), (2076, 308340), (2160, 296349), (2284, 280260), (2595, 246672), (2768, 231255), (2855, 224208), (3114, 205560), (3240, 197566), (3426, 186840), (3460, 185004), (4152, 154170), (4568, 140130), (4671, 137040), (5139, 124560), (5190, 123336), (5710, 112104), (6228, 102780), (6480, 98783), (6852, 93420), (6920, 92502), (7785, 82224), (8304, 77085), (8565, 74736), (9136, 70065), (9342, 68520), (10278, 62280), (10380, 61668), (11420, 56052), (12456, 51390), (13704, 46710), (13840, 46251), (14013, 45680), (15417, 41520), (15570, 41112), (17130, 37368), (18684, 34260), (20556, 31140), (20760, 30834), (22840, 28026), (23355, 27408), (24912, 25695)]