18715890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 27940110

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 79, 106, 149, 158, 159, 237, 265, 298, 318, 395, 447, 474, 530, 745, 790, 795, 894, 1185, 1490, 1590, 2235, 2370, 4187, 4470, 7897, 8374, 11771, 12561, 15794, 20935, 23542, 23691, 25122, 35313, 39485, 41870, 47382, 58855, 62805, 70626, 78970, 117710, 118455, 125610, 176565, 236910, 353130, 623863, 1247726, 1871589, 3119315, 3743178, 6238630, 9357945, 18715890]

約数ペア:

[(1, 18715890), (2, 9357945), (3, 6238630), (5, 3743178), (6, 3119315), (10, 1871589), (15, 1247726), (30, 623863), (53, 353130), (79, 236910), (106, 176565), (149, 125610), (158, 118455), (159, 117710), (237, 78970), (265, 70626), (298, 62805), (318, 58855), (395, 47382), (447, 41870), (474, 39485), (530, 35313), (745, 25122), (790, 23691), (795, 23542), (894, 20935), (1185, 15794), (1490, 12561), (1590, 11771), (2235, 8374), (2370, 7897), (4187, 4470)]