18994275

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 36560160

約数和(自身を除く): 17565885

約数列:

[1, 3, 5, 9, 15, 25, 29, 41, 45, 71, 75, 87, 123, 145, 205, 213, 225, 261, 355, 369, 435, 615, 639, 725, 1025, 1065, 1189, 1305, 1775, 1845, 2059, 2175, 2911, 3075, 3195, 3567, 5325, 5945, 6177, 6525, 8733, 9225, 10295, 10701, 14555, 15975, 17835, 18531, 26199, 29725, 30885, 43665, 51475, 53505, 72775, 84419, 89175, 92655, 130995, 154425, 218325, 253257, 267525, 422095, 463275, 654975, 759771, 1266285, 2110475, 3798855, 6331425, 18994275]

約数ペア:

[(1, 18994275), (3, 6331425), (5, 3798855), (9, 2110475), (15, 1266285), (25, 759771), (29, 654975), (41, 463275), (45, 422095), (71, 267525), (75, 253257), (87, 218325), (123, 154425), (145, 130995), (205, 92655), (213, 89175), (225, 84419), (261, 72775), (355, 53505), (369, 51475), (435, 43665), (615, 30885), (639, 29725), (725, 26199), (1025, 18531), (1065, 17835), (1189, 15975), (1305, 14555), (1775, 10701), (1845, 10295), (2059, 9225), (2175, 8733), (2911, 6525), (3075, 6177), (3195, 5945), (3567, 5325)]