20007040

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{727}}^1$

素因数の和:789

約数の個数: 64

約数和(自身を含む): 49008960

約数和(自身を除く): 29001920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 320, 344, 430, 640, 688, 727, 860, 1376, 1454, 1720, 2752, 2908, 3440, 3635, 5504, 5816, 6880, 7270, 11632, 13760, 14540, 23264, 27520, 29080, 31261, 46528, 58160, 62522, 93056, 116320, 125044, 156305, 232640, 250088, 312610, 465280, 500176, 625220, 1000352, 1250440, 2000704, 2500880, 4001408, 5001760, 10003520, 20007040]

約数ペア:

[(1, 20007040), (2, 10003520), (4, 5001760), (5, 4001408), (8, 2500880), (10, 2000704), (16, 1250440), (20, 1000352), (32, 625220), (40, 500176), (43, 465280), (64, 312610), (80, 250088), (86, 232640), (128, 156305), (160, 125044), (172, 116320), (215, 93056), (320, 62522), (344, 58160), (430, 46528), (640, 31261), (688, 29080), (727, 27520), (860, 23264), (1376, 14540), (1454, 13760), (1720, 11632), (2752, 7270), (2908, 6880), (3440, 5816), (3635, 5504)]