18750040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15121}}^1$

素因数の和:15163

約数の個数: 32

約数和(自身を含む): 43551360

約数和(自身を除く): 24801320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15121, 30242, 60484, 75605, 120968, 151210, 302420, 468751, 604840, 937502, 1875004, 2343755, 3750008, 4687510, 9375020, 18750040]

約数ペア:

[(1, 18750040), (2, 9375020), (4, 4687510), (5, 3750008), (8, 2343755), (10, 1875004), (20, 937502), (31, 604840), (40, 468751), (62, 302420), (124, 151210), (155, 120968), (248, 75605), (310, 60484), (620, 30242), (1240, 15121)]