212920125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{727}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 392491008

約数和(自身を除く): 179570883

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 125, 165, 213, 275, 355, 375, 727, 781, 825, 1065, 1375, 1775, 2181, 2343, 3635, 3905, 4125, 5325, 7997, 8875, 10905, 11715, 18175, 19525, 23991, 26625, 39985, 51617, 54525, 58575, 90875, 97625, 119955, 154851, 199925, 258085, 272625, 292875, 567787, 599775, 774255, 999625, 1290425, 1703361, 2838935, 2998875, 3871275, 6452125, 8516805, 14194675, 19356375, 42584025, 70973375, 212920125]

約数ペア:

[(1, 212920125), (3, 70973375), (5, 42584025), (11, 19356375), (15, 14194675), (25, 8516805), (33, 6452125), (55, 3871275), (71, 2998875), (75, 2838935), (125, 1703361), (165, 1290425), (213, 999625), (275, 774255), (355, 599775), (375, 567787), (727, 292875), (781, 272625), (825, 258085), (1065, 199925), (1375, 154851), (1775, 119955), (2181, 97625), (2343, 90875), (3635, 58575), (3905, 54525), (4125, 51617), (5325, 39985), (7997, 26625), (8875, 23991), (10905, 19525), (11715, 18175)]