18615825

素因数分解:

$3^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:368

約数の個数: 60

約数和(自身を含む): 35784540

約数和(自身を除く): 17168715

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 81, 87, 135, 145, 225, 261, 317, 405, 435, 675, 725, 783, 951, 1305, 1585, 2025, 2175, 2349, 2853, 3915, 4755, 6525, 7925, 8559, 9193, 11745, 14265, 19575, 23775, 25677, 27579, 42795, 45965, 58725, 71325, 82737, 128385, 137895, 213975, 229825, 248211, 413685, 641925, 689475, 744633, 1241055, 2068425, 3723165, 6205275, 18615825]

約数ペア:

[(1, 18615825), (3, 6205275), (5, 3723165), (9, 2068425), (15, 1241055), (25, 744633), (27, 689475), (29, 641925), (45, 413685), (75, 248211), (81, 229825), (87, 213975), (135, 137895), (145, 128385), (225, 82737), (261, 71325), (317, 58725), (405, 45965), (435, 42795), (675, 27579), (725, 25677), (783, 23775), (951, 19575), (1305, 14265), (1585, 11745), (2025, 9193), (2175, 8559), (2349, 7925), (2853, 6525), (3915, 4755)]