199957760

素因数分解:

$2^8\times 5^1\times {\mathrm{156217}}^1$

素因数の和:156238

約数の個数: 36

約数和(自身を含む): 478964388

約数和(自身を除く): 279006628

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 156217, 312434, 624868, 781085, 1249736, 1562170, 2499472, 3124340, 4998944, 6248680, 9997888, 12497360, 19995776, 24994720, 39991552, 49989440, 99978880, 199957760]

約数ペア:

[(1, 199957760), (2, 99978880), (4, 49989440), (5, 39991552), (8, 24994720), (10, 19995776), (16, 12497360), (20, 9997888), (32, 6248680), (40, 4998944), (64, 3124340), (80, 2499472), (128, 1562170), (160, 1249736), (256, 781085), (320, 624868), (640, 312434), (1280, 156217)]