881980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 2136960

約数和(自身を除く): 1254980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 211, 220, 380, 418, 422, 836, 844, 1045, 1055, 2090, 2110, 2321, 4009, 4180, 4220, 4642, 8018, 9284, 11605, 16036, 20045, 23210, 40090, 44099, 46420, 80180, 88198, 176396, 220495, 440990, 881980]

約数ペア:

[(1, 881980), (2, 440990), (4, 220495), (5, 176396), (10, 88198), (11, 80180), (19, 46420), (20, 44099), (22, 40090), (38, 23210), (44, 20045), (55, 16036), (76, 11605), (95, 9284), (110, 8018), (190, 4642), (209, 4220), (211, 4180), (220, 4009), (380, 2321), (418, 2110), (422, 2090), (836, 1055), (844, 1045)]