18993390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1625

約数の個数: 64

約数和(自身を含む): 50706432

約数和(自身を除く): 31713042

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 62, 65, 78, 93, 130, 155, 186, 195, 310, 390, 403, 465, 806, 930, 1209, 1571, 2015, 2418, 3142, 4030, 4713, 6045, 7855, 9426, 12090, 15710, 20423, 23565, 40846, 47130, 48701, 61269, 97402, 102115, 122538, 146103, 204230, 243505, 292206, 306345, 487010, 612690, 633113, 730515, 1266226, 1461030, 1899339, 3165565, 3798678, 6331130, 9496695, 18993390]

約数ペア:

[(1, 18993390), (2, 9496695), (3, 6331130), (5, 3798678), (6, 3165565), (10, 1899339), (13, 1461030), (15, 1266226), (26, 730515), (30, 633113), (31, 612690), (39, 487010), (62, 306345), (65, 292206), (78, 243505), (93, 204230), (130, 146103), (155, 122538), (186, 102115), (195, 97402), (310, 61269), (390, 48701), (403, 47130), (465, 40846), (806, 23565), (930, 20423), (1209, 15710), (1571, 12090), (2015, 9426), (2418, 7855), (3142, 6045), (4030, 4713)]