21557730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 32874270

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 71, 87, 142, 145, 174, 213, 290, 349, 355, 426, 435, 698, 710, 870, 1047, 1065, 1745, 2059, 2094, 2130, 3490, 4118, 5235, 6177, 10121, 10295, 10470, 12354, 20242, 20590, 24779, 30363, 30885, 49558, 50605, 60726, 61770, 74337, 101210, 123895, 148674, 151815, 247790, 303630, 371685, 718591, 743370, 1437182, 2155773, 3592955, 4311546, 7185910, 10778865, 21557730]

約数ペア:

[(1, 21557730), (2, 10778865), (3, 7185910), (5, 4311546), (6, 3592955), (10, 2155773), (15, 1437182), (29, 743370), (30, 718591), (58, 371685), (71, 303630), (87, 247790), (142, 151815), (145, 148674), (174, 123895), (213, 101210), (290, 74337), (349, 61770), (355, 60726), (426, 50605), (435, 49558), (698, 30885), (710, 30363), (870, 24779), (1047, 20590), (1065, 20242), (1745, 12354), (2059, 10470), (2094, 10295), (2130, 10121), (3490, 6177), (4118, 5235)]