21454875

素因数分解:

$3^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:203

約数の個数: 80

約数和(自身を含む): 43339296

約数和(自身を除く): 21884421

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 125, 135, 163, 195, 225, 325, 351, 375, 405, 489, 585, 675, 815, 975, 1053, 1125, 1467, 1625, 1755, 2025, 2119, 2445, 2925, 3375, 4075, 4401, 4875, 5265, 6357, 7335, 8775, 10125, 10595, 12225, 13203, 14625, 19071, 20375, 22005, 26325, 31785, 36675, 43875, 52975, 57213, 61125, 66015, 95355, 110025, 131625, 158925, 171639, 183375, 264875, 286065, 330075, 476775, 550125, 794625, 858195, 1430325, 1650375, 2383875, 4290975, 7151625, 21454875]

約数ペア:

[(1, 21454875), (3, 7151625), (5, 4290975), (9, 2383875), (13, 1650375), (15, 1430325), (25, 858195), (27, 794625), (39, 550125), (45, 476775), (65, 330075), (75, 286065), (81, 264875), (117, 183375), (125, 171639), (135, 158925), (163, 131625), (195, 110025), (225, 95355), (325, 66015), (351, 61125), (375, 57213), (405, 52975), (489, 43875), (585, 36675), (675, 31785), (815, 26325), (975, 22005), (1053, 20375), (1125, 19071), (1467, 14625), (1625, 13203), (1755, 12225), (2025, 10595), (2119, 10125), (2445, 8775), (2925, 7335), (3375, 6357), (4075, 5265), (4401, 4875)]