18940163840

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{30763}}^1$

素因数の和:30834

約数の個数: 144

約数和(自身を含む): 50179529568

約数和(自身を除く): 31239365728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 64, 65, 74, 80, 104, 128, 130, 148, 160, 185, 208, 256, 260, 296, 320, 370, 416, 481, 520, 592, 640, 740, 832, 962, 1040, 1184, 1280, 1480, 1664, 1924, 2080, 2368, 2405, 2960, 3328, 3848, 4160, 4736, 4810, 5920, 7696, 8320, 9472, 9620, 11840, 15392, 16640, 19240, 23680, 30763, 30784, 38480, 47360, 61526, 61568, 76960, 123052, 123136, 153815, 153920, 246104, 307630, 307840, 399919, 492208, 615260, 615680, 799838, 984416, 1138231, 1230520, 1599676, 1968832, 1999595, 2276462, 2461040, 3199352, 3937664, 3999190, 4552924, 4922080, 5691155, 6398704, 7875328, 7998380, 9105848, 9844160, 11382310, 12797408, 14797003, 15996760, 18211696, 19688320, 22764620, 25594816, 29594006, 31993520, 36423392, 39376640, 45529240, 51189632, 59188012, 63987040, 72846784, 73985015, 91058480, 102379264, 118376024, 127974080, 145693568, 147970030, 182116960, 236752048, 255948160, 291387136, 295940060, 364233920, 473504096, 511896320, 591880120, 728467840, 947008192, 1183760240, 1456935680, 1894016384, 2367520480, 3788032768, 4735040960, 9470081920, 18940163840]

約数ペア:

[(1, 18940163840), (2, 9470081920), (4, 4735040960), (5, 3788032768), (8, 2367520480), (10, 1894016384), (13, 1456935680), (16, 1183760240), (20, 947008192), (26, 728467840), (32, 591880120), (37, 511896320), (40, 473504096), (52, 364233920), (64, 295940060), (65, 291387136), (74, 255948160), (80, 236752048), (104, 182116960), (128, 147970030), (130, 145693568), (148, 127974080), (160, 118376024), (185, 102379264), (208, 91058480), (256, 73985015), (260, 72846784), (296, 63987040), (320, 59188012), (370, 51189632), (416, 45529240), (481, 39376640), (520, 36423392), (592, 31993520), (640, 29594006), (740, 25594816), (832, 22764620), (962, 19688320), (1040, 18211696), (1184, 15996760), (1280, 14797003), (1480, 12797408), (1664, 11382310), (1924, 9844160), (2080, 9105848), (2368, 7998380), (2405, 7875328), (2960, 6398704), (3328, 5691155), (3848, 4922080), (4160, 4552924), (4736, 3999190), (4810, 3937664), (5920, 3199352), (7696, 2461040), (8320, 2276462), (9472, 1999595), (9620, 1968832), (11840, 1599676), (15392, 1230520), (16640, 1138231), (19240, 984416), (23680, 799838), (30763, 615680), (30784, 615260), (38480, 492208), (47360, 399919), (61526, 307840), (61568, 307630), (76960, 246104), (123052, 153920), (123136, 153815)]