19064980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4561}}^1$

素因数の和:4600

約数の個数: 48

約数和(自身を含む): 45984960

約数和(自身を除く): 26919980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4561, 9122, 18244, 22805, 45610, 50171, 86659, 91220, 100342, 173318, 200684, 250855, 346636, 433295, 501710, 866590, 953249, 1003420, 1733180, 1906498, 3812996, 4766245, 9532490, 19064980]

約数ペア:

[(1, 19064980), (2, 9532490), (4, 4766245), (5, 3812996), (10, 1906498), (11, 1733180), (19, 1003420), (20, 953249), (22, 866590), (38, 501710), (44, 433295), (55, 346636), (76, 250855), (95, 200684), (110, 173318), (190, 100342), (209, 91220), (220, 86659), (380, 50171), (418, 45610), (836, 22805), (1045, 18244), (2090, 9122), (4180, 4561)]