81846820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{1091}}^1$

素因数の和:1153

約数の個数: 72

約数和(自身を含む): 195197184

約数和(自身を除く): 113350364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 310, 341, 484, 605, 620, 682, 1091, 1210, 1364, 1705, 2182, 2420, 3410, 3751, 4364, 5455, 6820, 7502, 10910, 12001, 15004, 18755, 21820, 24002, 33821, 37510, 48004, 60005, 67642, 75020, 120010, 132011, 135284, 169105, 240020, 264022, 338210, 372031, 528044, 660055, 676420, 744062, 1320110, 1488124, 1860155, 2640220, 3720310, 4092341, 7440620, 8184682, 16369364, 20461705, 40923410, 81846820]

約数ペア:

[(1, 81846820), (2, 40923410), (4, 20461705), (5, 16369364), (10, 8184682), (11, 7440620), (20, 4092341), (22, 3720310), (31, 2640220), (44, 1860155), (55, 1488124), (62, 1320110), (110, 744062), (121, 676420), (124, 660055), (155, 528044), (220, 372031), (242, 338210), (310, 264022), (341, 240020), (484, 169105), (605, 135284), (620, 132011), (682, 120010), (1091, 75020), (1210, 67642), (1364, 60005), (1705, 48004), (2182, 37510), (2420, 33821), (3410, 24002), (3751, 21820), (4364, 18755), (5455, 15004), (6820, 12001), (7502, 10910)]