639772575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{347}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 1198589952

約数和(自身を除く): 558817377

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 61, 65, 75, 93, 155, 183, 195, 305, 325, 347, 403, 465, 775, 793, 915, 975, 1041, 1209, 1525, 1735, 1891, 2015, 2325, 2379, 3965, 4511, 4575, 5205, 5673, 6045, 8675, 9455, 10075, 10757, 11895, 13533, 19825, 21167, 22555, 24583, 26025, 28365, 30225, 32271, 47275, 53785, 59475, 63501, 67665, 73749, 105835, 112775, 122915, 139841, 141825, 161355, 268925, 275171, 317505, 338325, 368745, 419523, 529175, 614575, 656177, 699205, 806775, 825513, 1375855, 1587525, 1843725, 1968531, 2097615, 3280885, 3496025, 4127565, 6879275, 8530301, 9842655, 10488075, 16404425, 20637825, 25590903, 42651505, 49213275, 127954515, 213257525, 639772575]

約数ペア:

[(1, 639772575), (3, 213257525), (5, 127954515), (13, 49213275), (15, 42651505), (25, 25590903), (31, 20637825), (39, 16404425), (61, 10488075), (65, 9842655), (75, 8530301), (93, 6879275), (155, 4127565), (183, 3496025), (195, 3280885), (305, 2097615), (325, 1968531), (347, 1843725), (403, 1587525), (465, 1375855), (775, 825513), (793, 806775), (915, 699205), (975, 656177), (1041, 614575), (1209, 529175), (1525, 419523), (1735, 368745), (1891, 338325), (2015, 317505), (2325, 275171), (2379, 268925), (3965, 161355), (4511, 141825), (4575, 139841), (5205, 122915), (5673, 112775), (6045, 105835), (8675, 73749), (9455, 67665), (10075, 63501), (10757, 59475), (11895, 53785), (13533, 47275), (19825, 32271), (21167, 30225), (22555, 28365), (24583, 26025)]