21087750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:958

約数の個数: 64

約数和(自身を含む): 54392832

約数和(自身を除く): 33305082

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 125, 150, 155, 186, 250, 310, 375, 465, 750, 775, 907, 930, 1550, 1814, 2325, 2721, 3875, 4535, 4650, 5442, 7750, 9070, 11625, 13605, 22675, 23250, 27210, 28117, 45350, 56234, 68025, 84351, 113375, 136050, 140585, 168702, 226750, 281170, 340125, 421755, 680250, 702925, 843510, 1405850, 2108775, 3514625, 4217550, 7029250, 10543875, 21087750]

約数ペア:

[(1, 21087750), (2, 10543875), (3, 7029250), (5, 4217550), (6, 3514625), (10, 2108775), (15, 1405850), (25, 843510), (30, 702925), (31, 680250), (50, 421755), (62, 340125), (75, 281170), (93, 226750), (125, 168702), (150, 140585), (155, 136050), (186, 113375), (250, 84351), (310, 68025), (375, 56234), (465, 45350), (750, 28117), (775, 27210), (907, 23250), (930, 22675), (1550, 13605), (1814, 11625), (2325, 9070), (2721, 7750), (3875, 5442), (4535, 4650)]