26181980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:411

約数の個数: 72

約数和(自身を含む): 62563200

約数和(自身を除く): 36381220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 310, 341, 349, 484, 605, 620, 682, 698, 1210, 1364, 1396, 1705, 1745, 2420, 3410, 3490, 3751, 3839, 6820, 6980, 7502, 7678, 10819, 15004, 15356, 18755, 19195, 21638, 37510, 38390, 42229, 43276, 54095, 75020, 76780, 84458, 108190, 119009, 168916, 211145, 216380, 238018, 422290, 476036, 595045, 844580, 1190090, 1309099, 2380180, 2618198, 5236396, 6545495, 13090990, 26181980]

約数ペア:

[(1, 26181980), (2, 13090990), (4, 6545495), (5, 5236396), (10, 2618198), (11, 2380180), (20, 1309099), (22, 1190090), (31, 844580), (44, 595045), (55, 476036), (62, 422290), (110, 238018), (121, 216380), (124, 211145), (155, 168916), (220, 119009), (242, 108190), (310, 84458), (341, 76780), (349, 75020), (484, 54095), (605, 43276), (620, 42229), (682, 38390), (698, 37510), (1210, 21638), (1364, 19195), (1396, 18755), (1705, 15356), (1745, 15004), (2420, 10819), (3410, 7678), (3490, 7502), (3751, 6980), (3839, 6820)]