1821979520

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1103}}^1$

素因数の和:1240

約数の個数: 128

約数和(自身を含む): 4560624000

約数和(自身を除く): 2738644480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 89, 116, 128, 145, 160, 178, 232, 290, 320, 356, 445, 464, 580, 640, 712, 890, 928, 1103, 1160, 1424, 1780, 1856, 2206, 2320, 2581, 2848, 3560, 3712, 4412, 4640, 5162, 5515, 5696, 7120, 8824, 9280, 10324, 11030, 11392, 12905, 14240, 17648, 18560, 20648, 22060, 25810, 28480, 31987, 35296, 41296, 44120, 51620, 56960, 63974, 70592, 82592, 88240, 98167, 103240, 127948, 141184, 159935, 165184, 176480, 196334, 206480, 255896, 319870, 330368, 352960, 392668, 412960, 490835, 511792, 639740, 705920, 785336, 825920, 981670, 1023584, 1279480, 1570672, 1651840, 1963340, 2047168, 2558960, 2846843, 3141344, 3926680, 4094336, 5117920, 5693686, 6282688, 7853360, 10235840, 11387372, 12565376, 14234215, 15706720, 20471680, 22774744, 28468430, 31413440, 45549488, 56936860, 62826880, 91098976, 113873720, 182197952, 227747440, 364395904, 455494880, 910989760, 1821979520]

約数ペア:

[(1, 1821979520), (2, 910989760), (4, 455494880), (5, 364395904), (8, 227747440), (10, 182197952), (16, 113873720), (20, 91098976), (29, 62826880), (32, 56936860), (40, 45549488), (58, 31413440), (64, 28468430), (80, 22774744), (89, 20471680), (116, 15706720), (128, 14234215), (145, 12565376), (160, 11387372), (178, 10235840), (232, 7853360), (290, 6282688), (320, 5693686), (356, 5117920), (445, 4094336), (464, 3926680), (580, 3141344), (640, 2846843), (712, 2558960), (890, 2047168), (928, 1963340), (1103, 1651840), (1160, 1570672), (1424, 1279480), (1780, 1023584), (1856, 981670), (2206, 825920), (2320, 785336), (2581, 705920), (2848, 639740), (3560, 511792), (3712, 490835), (4412, 412960), (4640, 392668), (5162, 352960), (5515, 330368), (5696, 319870), (7120, 255896), (8824, 206480), (9280, 196334), (10324, 176480), (11030, 165184), (11392, 159935), (12905, 141184), (14240, 127948), (17648, 103240), (18560, 98167), (20648, 88240), (22060, 82592), (25810, 70592), (28480, 63974), (31987, 56960), (35296, 51620), (41296, 44120)]