25279280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:358

約数の個数: 80

約数和(自身を含む): 64162560

約数和(自身を除く): 38883280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 208, 218, 223, 260, 436, 446, 520, 545, 872, 892, 1040, 1090, 1115, 1417, 1744, 1784, 2180, 2230, 2834, 2899, 3568, 4360, 4460, 5668, 5798, 7085, 8720, 8920, 11336, 11596, 14170, 14495, 17840, 22672, 23192, 24307, 28340, 28990, 46384, 48614, 56680, 57980, 97228, 113360, 115960, 121535, 194456, 231920, 243070, 315991, 388912, 486140, 631982, 972280, 1263964, 1579955, 1944560, 2527928, 3159910, 5055856, 6319820, 12639640, 25279280]

約数ペア:

[(1, 25279280), (2, 12639640), (4, 6319820), (5, 5055856), (8, 3159910), (10, 2527928), (13, 1944560), (16, 1579955), (20, 1263964), (26, 972280), (40, 631982), (52, 486140), (65, 388912), (80, 315991), (104, 243070), (109, 231920), (130, 194456), (208, 121535), (218, 115960), (223, 113360), (260, 97228), (436, 57980), (446, 56680), (520, 48614), (545, 46384), (872, 28990), (892, 28340), (1040, 24307), (1090, 23192), (1115, 22672), (1417, 17840), (1744, 14495), (1784, 14170), (2180, 11596), (2230, 11336), (2834, 8920), (2899, 8720), (3568, 7085), (4360, 5798), (4460, 5668)]