19928025

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{757}}^1$

素因数の和:792

約数の個数: 60

約数和(自身を含む): 39805612

約数和(自身を除く): 19877587

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 325, 351, 405, 585, 675, 757, 975, 1053, 1755, 2025, 2271, 2925, 3785, 5265, 6813, 8775, 9841, 11355, 18925, 20439, 26325, 29523, 34065, 49205, 56775, 61317, 88569, 102195, 147615, 170325, 246025, 265707, 306585, 442845, 510975, 738075, 797121, 1328535, 1532925, 2214225, 3985605, 6642675, 19928025]

約数ペア:

[(1, 19928025), (3, 6642675), (5, 3985605), (9, 2214225), (13, 1532925), (15, 1328535), (25, 797121), (27, 738075), (39, 510975), (45, 442845), (65, 306585), (75, 265707), (81, 246025), (117, 170325), (135, 147615), (195, 102195), (225, 88569), (325, 61317), (351, 56775), (405, 49205), (585, 34065), (675, 29523), (757, 26325), (975, 20439), (1053, 18925), (1755, 11355), (2025, 9841), (2271, 8775), (2925, 6813), (3785, 5265)]