20128685440

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{31357}}^1$

素因数の和:31452

約数の個数: 128

約数和(自身を含む): 51815959200

約数和(自身を除く): 31687273760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 59, 64, 68, 80, 85, 118, 128, 136, 160, 170, 236, 272, 295, 320, 340, 472, 544, 590, 640, 680, 944, 1003, 1088, 1180, 1360, 1888, 2006, 2176, 2360, 2720, 3776, 4012, 4720, 5015, 5440, 7552, 8024, 9440, 10030, 10880, 16048, 18880, 20060, 31357, 32096, 37760, 40120, 62714, 64192, 80240, 125428, 128384, 156785, 160480, 250856, 313570, 320960, 501712, 533069, 627140, 641920, 1003424, 1066138, 1254280, 1850063, 2006848, 2132276, 2508560, 2665345, 3700126, 4013696, 4264552, 5017120, 5330690, 7400252, 8529104, 9250315, 10034240, 10661380, 14800504, 17058208, 18500630, 20068480, 21322760, 29601008, 31451071, 34116416, 37001260, 42645520, 59202016, 62902142, 68232832, 74002520, 85291040, 118404032, 125804284, 148005040, 157255355, 170582080, 236808064, 251608568, 296010080, 314510710, 341164160, 503217136, 592020160, 629021420, 1006434272, 1184040320, 1258042840, 2012868544, 2516085680, 4025737088, 5032171360, 10064342720, 20128685440]

約数ペア:

[(1, 20128685440), (2, 10064342720), (4, 5032171360), (5, 4025737088), (8, 2516085680), (10, 2012868544), (16, 1258042840), (17, 1184040320), (20, 1006434272), (32, 629021420), (34, 592020160), (40, 503217136), (59, 341164160), (64, 314510710), (68, 296010080), (80, 251608568), (85, 236808064), (118, 170582080), (128, 157255355), (136, 148005040), (160, 125804284), (170, 118404032), (236, 85291040), (272, 74002520), (295, 68232832), (320, 62902142), (340, 59202016), (472, 42645520), (544, 37001260), (590, 34116416), (640, 31451071), (680, 29601008), (944, 21322760), (1003, 20068480), (1088, 18500630), (1180, 17058208), (1360, 14800504), (1888, 10661380), (2006, 10034240), (2176, 9250315), (2360, 8529104), (2720, 7400252), (3776, 5330690), (4012, 5017120), (4720, 4264552), (5015, 4013696), (5440, 3700126), (7552, 2665345), (8024, 2508560), (9440, 2132276), (10030, 2006848), (10880, 1850063), (16048, 1254280), (18880, 1066138), (20060, 1003424), (31357, 641920), (32096, 627140), (37760, 533069), (40120, 501712), (62714, 320960), (64192, 313570), (80240, 250856), (125428, 160480), (128384, 156785)]