21669620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4993}}^1$

素因数の和:5040

約数の個数: 48

約数和(自身を含む): 53695488

約数和(自身を除く): 32025868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4993, 9986, 19972, 24965, 34951, 49930, 69902, 99860, 139804, 154783, 174755, 309566, 349510, 619132, 699020, 773915, 1083481, 1547830, 2166962, 3095660, 4333924, 5417405, 10834810, 21669620]

約数ペア:

[(1, 21669620), (2, 10834810), (4, 5417405), (5, 4333924), (7, 3095660), (10, 2166962), (14, 1547830), (20, 1083481), (28, 773915), (31, 699020), (35, 619132), (62, 349510), (70, 309566), (124, 174755), (140, 154783), (155, 139804), (217, 99860), (310, 69902), (434, 49930), (620, 34951), (868, 24965), (1085, 19972), (2170, 9986), (4340, 4993)]