18857920

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1901}}^1$

素因数の和:1949

約数の個数: 56

約数和(自身を含む): 46378368

約数和(自身を除く): 27520448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1901, 1984, 2480, 3802, 4960, 7604, 9505, 9920, 15208, 19010, 30416, 38020, 58931, 60832, 76040, 117862, 121664, 152080, 235724, 294655, 304160, 471448, 589310, 608320, 942896, 1178620, 1885792, 2357240, 3771584, 4714480, 9428960, 18857920]

約数ペア:

[(1, 18857920), (2, 9428960), (4, 4714480), (5, 3771584), (8, 2357240), (10, 1885792), (16, 1178620), (20, 942896), (31, 608320), (32, 589310), (40, 471448), (62, 304160), (64, 294655), (80, 235724), (124, 152080), (155, 121664), (160, 117862), (248, 76040), (310, 60832), (320, 58931), (496, 38020), (620, 30416), (992, 19010), (1240, 15208), (1901, 9920), (1984, 9505), (2480, 7604), (3802, 4960)]