20556720

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:360

約数の個数: 160

約数和(自身を含む): 73328640

約数和(自身を除く): 52771920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 36, 40, 45, 48, 54, 60, 62, 72, 80, 90, 93, 108, 120, 124, 135, 144, 155, 180, 186, 216, 240, 248, 270, 279, 307, 310, 360, 372, 432, 465, 496, 540, 558, 614, 620, 720, 744, 837, 921, 930, 1080, 1116, 1228, 1240, 1395, 1488, 1535, 1674, 1842, 1860, 2160, 2232, 2456, 2480, 2763, 2790, 3070, 3348, 3684, 3720, 4185, 4464, 4605, 4912, 5526, 5580, 6140, 6696, 7368, 7440, 8289, 8370, 9210, 9517, 11052, 11160, 12280, 13392, 13815, 14736, 16578, 16740, 18420, 19034, 22104, 22320, 24560, 27630, 28551, 33156, 33480, 36840, 38068, 41445, 44208, 47585, 55260, 57102, 66312, 66960, 73680, 76136, 82890, 85653, 95170, 110520, 114204, 132624, 142755, 152272, 165780, 171306, 190340, 221040, 228408, 256959, 285510, 331560, 342612, 380680, 428265, 456816, 513918, 571020, 663120, 685224, 761360, 856530, 1027836, 1142040, 1284795, 1370448, 1713060, 2055672, 2284080, 2569590, 3426120, 4111344, 5139180, 6852240, 10278360, 20556720]

約数ペア:

[(1, 20556720), (2, 10278360), (3, 6852240), (4, 5139180), (5, 4111344), (6, 3426120), (8, 2569590), (9, 2284080), (10, 2055672), (12, 1713060), (15, 1370448), (16, 1284795), (18, 1142040), (20, 1027836), (24, 856530), (27, 761360), (30, 685224), (31, 663120), (36, 571020), (40, 513918), (45, 456816), (48, 428265), (54, 380680), (60, 342612), (62, 331560), (72, 285510), (80, 256959), (90, 228408), (93, 221040), (108, 190340), (120, 171306), (124, 165780), (135, 152272), (144, 142755), (155, 132624), (180, 114204), (186, 110520), (216, 95170), (240, 85653), (248, 82890), (270, 76136), (279, 73680), (307, 66960), (310, 66312), (360, 57102), (372, 55260), (432, 47585), (465, 44208), (496, 41445), (540, 38068), (558, 36840), (614, 33480), (620, 33156), (720, 28551), (744, 27630), (837, 24560), (921, 22320), (930, 22104), (1080, 19034), (1116, 18420), (1228, 16740), (1240, 16578), (1395, 14736), (1488, 13815), (1535, 13392), (1674, 12280), (1842, 11160), (1860, 11052), (2160, 9517), (2232, 9210), (2456, 8370), (2480, 8289), (2763, 7440), (2790, 7368), (3070, 6696), (3348, 6140), (3684, 5580), (3720, 5526), (4185, 4912), (4464, 4605)]