637780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 1580544

約数和(自身を除く): 942764

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 223, 260, 286, 446, 572, 715, 892, 1115, 1430, 2230, 2453, 2860, 2899, 4460, 4906, 5798, 9812, 11596, 12265, 14495, 24530, 28990, 31889, 49060, 57980, 63778, 127556, 159445, 318890, 637780]

約数ペア:

[(1, 637780), (2, 318890), (4, 159445), (5, 127556), (10, 63778), (11, 57980), (13, 49060), (20, 31889), (22, 28990), (26, 24530), (44, 14495), (52, 12265), (55, 11596), (65, 9812), (110, 5798), (130, 4906), (143, 4460), (220, 2899), (223, 2860), (260, 2453), (286, 2230), (446, 1430), (572, 1115), (715, 892)]