20171209940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{18121}}^1\times {\mathrm{7951}}^1$

素因数の和:26088

約数の個数: 48

約数和(自身を含む): 48419664384

約数和(自身を除く): 28248454444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 7951, 15902, 18121, 31804, 36242, 39755, 55657, 72484, 79510, 90605, 111314, 126847, 159020, 181210, 222628, 253694, 278285, 362420, 507388, 556570, 634235, 1113140, 1268470, 2536940, 144080071, 288160142, 576320284, 720400355, 1008560497, 1440800710, 2017120994, 2881601420, 4034241988, 5042802485, 10085604970, 20171209940]

約数ペア:

[(1, 20171209940), (2, 10085604970), (4, 5042802485), (5, 4034241988), (7, 2881601420), (10, 2017120994), (14, 1440800710), (20, 1008560497), (28, 720400355), (35, 576320284), (70, 288160142), (140, 144080071), (7951, 2536940), (15902, 1268470), (18121, 1113140), (31804, 634235), (36242, 556570), (39755, 507388), (55657, 362420), (72484, 278285), (79510, 253694), (90605, 222628), (111314, 181210), (126847, 159020)]