640343808

素因数分解:

$2^8\times 3^2\times {\mathrm{13}}^1\times {\mathrm{21379}}^1$

素因数の和:21414

約数の個数: 108

約数和(自身を含む): 1988382760

約数和(自身を除く): 1348038952

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 64, 72, 78, 96, 104, 117, 128, 144, 156, 192, 208, 234, 256, 288, 312, 384, 416, 468, 576, 624, 768, 832, 936, 1152, 1248, 1664, 1872, 2304, 2496, 3328, 3744, 4992, 7488, 9984, 14976, 21379, 29952, 42758, 64137, 85516, 128274, 171032, 192411, 256548, 277927, 342064, 384822, 513096, 555854, 684128, 769644, 833781, 1026192, 1111708, 1368256, 1539288, 1667562, 2052384, 2223416, 2501343, 2736512, 3078576, 3335124, 4104768, 4446832, 5002686, 5473024, 6157152, 6670248, 8209536, 8893664, 10005372, 12314304, 13340496, 16419072, 17787328, 20010744, 24628608, 26680992, 35574656, 40021488, 49257216, 53361984, 71149312, 80042976, 106723968, 160085952, 213447936, 320171904, 640343808]

約数ペア:

[(1, 640343808), (2, 320171904), (3, 213447936), (4, 160085952), (6, 106723968), (8, 80042976), (9, 71149312), (12, 53361984), (13, 49257216), (16, 40021488), (18, 35574656), (24, 26680992), (26, 24628608), (32, 20010744), (36, 17787328), (39, 16419072), (48, 13340496), (52, 12314304), (64, 10005372), (72, 8893664), (78, 8209536), (96, 6670248), (104, 6157152), (117, 5473024), (128, 5002686), (144, 4446832), (156, 4104768), (192, 3335124), (208, 3078576), (234, 2736512), (256, 2501343), (288, 2223416), (312, 2052384), (384, 1667562), (416, 1539288), (468, 1368256), (576, 1111708), (624, 1026192), (768, 833781), (832, 769644), (936, 684128), (1152, 555854), (1248, 513096), (1664, 384822), (1872, 342064), (2304, 277927), (2496, 256548), (3328, 192411), (3744, 171032), (4992, 128274), (7488, 85516), (9984, 64137), (14976, 42758), (21379, 29952)]