19764225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 39606840

約数和(自身を除く): 19842615

約数列:

[1, 3, 5, 9, 13, 15, 25, 29, 39, 45, 65, 75, 87, 117, 145, 195, 225, 233, 261, 325, 377, 435, 585, 699, 725, 975, 1131, 1165, 1305, 1885, 2097, 2175, 2925, 3029, 3393, 3495, 5655, 5825, 6525, 6757, 9087, 9425, 10485, 15145, 16965, 17475, 20271, 27261, 28275, 33785, 45435, 52425, 60813, 75725, 84825, 87841, 101355, 136305, 168925, 227175, 263523, 304065, 439205, 506775, 681525, 790569, 1317615, 1520325, 2196025, 3952845, 6588075, 19764225]

約数ペア:

[(1, 19764225), (3, 6588075), (5, 3952845), (9, 2196025), (13, 1520325), (15, 1317615), (25, 790569), (29, 681525), (39, 506775), (45, 439205), (65, 304065), (75, 263523), (87, 227175), (117, 168925), (145, 136305), (195, 101355), (225, 87841), (233, 84825), (261, 75725), (325, 60813), (377, 52425), (435, 45435), (585, 33785), (699, 28275), (725, 27261), (975, 20271), (1131, 17475), (1165, 16965), (1305, 15145), (1885, 10485), (2097, 9425), (2175, 9087), (2925, 6757), (3029, 6525), (3393, 5825), (3495, 5655)]