19684840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{307}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 51004800

約数和(自身を除く): 31319960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 307, 458, 614, 916, 1145, 1228, 1535, 1603, 1832, 2149, 2290, 2456, 3070, 3206, 4298, 4580, 6140, 6412, 8015, 8596, 9160, 10745, 12280, 12824, 16030, 17192, 21490, 32060, 42980, 64120, 70303, 85960, 140606, 281212, 351515, 492121, 562424, 703030, 984242, 1406060, 1968484, 2460605, 2812120, 3936968, 4921210, 9842420, 19684840]

約数ペア:

[(1, 19684840), (2, 9842420), (4, 4921210), (5, 3936968), (7, 2812120), (8, 2460605), (10, 1968484), (14, 1406060), (20, 984242), (28, 703030), (35, 562424), (40, 492121), (56, 351515), (70, 281212), (140, 140606), (229, 85960), (280, 70303), (307, 64120), (458, 42980), (614, 32060), (916, 21490), (1145, 17192), (1228, 16030), (1535, 12824), (1603, 12280), (1832, 10745), (2149, 9160), (2290, 8596), (2456, 8015), (3070, 6412), (3206, 6140), (4298, 4580)]