390463910

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{991}}^1$

素因数の和:1101

約数の個数: 48

約数和(自身を含む): 744702336

約数和(自身を除く): 354238426

約数列:

[1, 2, 5, 10, 31, 41, 62, 82, 155, 205, 310, 410, 961, 991, 1271, 1922, 1982, 2542, 4805, 4955, 6355, 9610, 9910, 12710, 30721, 39401, 40631, 61442, 78802, 81262, 153605, 197005, 203155, 307210, 394010, 406310, 952351, 1259561, 1904702, 2519122, 4761755, 6297805, 9523510, 12595610, 39046391, 78092782, 195231955, 390463910]

約数ペア:

[(1, 390463910), (2, 195231955), (5, 78092782), (10, 39046391), (31, 12595610), (41, 9523510), (62, 6297805), (82, 4761755), (155, 2519122), (205, 1904702), (310, 1259561), (410, 952351), (961, 406310), (991, 394010), (1271, 307210), (1922, 203155), (1982, 197005), (2542, 153605), (4805, 81262), (4955, 78802), (6355, 61442), (9610, 40631), (9910, 39401), (12710, 30721)]