18442520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25103080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 107, 124, 139, 155, 214, 248, 278, 310, 428, 535, 556, 620, 695, 856, 1070, 1112, 1240, 1390, 2140, 2780, 3317, 4280, 4309, 5560, 6634, 8618, 13268, 14873, 16585, 17236, 21545, 26536, 29746, 33170, 34472, 43090, 59492, 66340, 74365, 86180, 118984, 132680, 148730, 172360, 297460, 461063, 594920, 922126, 1844252, 2305315, 3688504, 4610630, 9221260, 18442520]

約数ペア:

[(1, 18442520), (2, 9221260), (4, 4610630), (5, 3688504), (8, 2305315), (10, 1844252), (20, 922126), (31, 594920), (40, 461063), (62, 297460), (107, 172360), (124, 148730), (139, 132680), (155, 118984), (214, 86180), (248, 74365), (278, 66340), (310, 59492), (428, 43090), (535, 34472), (556, 33170), (620, 29746), (695, 26536), (856, 21545), (1070, 17236), (1112, 16585), (1240, 14873), (1390, 13268), (2140, 8618), (2780, 6634), (3317, 5560), (4280, 4309)]