639769920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{666427}}^1$

素因数の和:666447

約数の個数: 56

約数和(自身を含む): 2031272544

約数和(自身を除く): 1391502624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 666427, 1332854, 1999281, 2665708, 3332135, 3998562, 5331416, 6664270, 7997124, 9996405, 10662832, 13328540, 15994248, 19992810, 21325664, 26657080, 31988496, 39985620, 42651328, 53314160, 63976992, 79971240, 106628320, 127953984, 159942480, 213256640, 319884960, 639769920]

約数ペア:

[(1, 639769920), (2, 319884960), (3, 213256640), (4, 159942480), (5, 127953984), (6, 106628320), (8, 79971240), (10, 63976992), (12, 53314160), (15, 42651328), (16, 39985620), (20, 31988496), (24, 26657080), (30, 21325664), (32, 19992810), (40, 15994248), (48, 13328540), (60, 10662832), (64, 9996405), (80, 7997124), (96, 6664270), (120, 5331416), (160, 3998562), (192, 3332135), (240, 2665708), (320, 1999281), (480, 1332854), (960, 666427)]