28137375

素因数分解:

$3^4\times 5^3\times 7^1\times {\mathrm{397}}^1$

素因数の和:431

約数の個数: 80

約数和(自身を含む): 60101184

約数和(自身を除く): 31963809

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 125, 135, 175, 189, 225, 315, 375, 397, 405, 525, 567, 675, 875, 945, 1125, 1191, 1575, 1985, 2025, 2625, 2779, 2835, 3375, 3573, 4725, 5955, 7875, 8337, 9925, 10125, 10719, 13895, 14175, 17865, 23625, 25011, 29775, 32157, 41685, 49625, 53595, 69475, 70875, 75033, 89325, 125055, 148875, 160785, 208425, 225099, 267975, 347375, 375165, 446625, 625275, 803925, 1042125, 1125495, 1339875, 1875825, 3126375, 4019625, 5627475, 9379125, 28137375]

約数ペア:

[(1, 28137375), (3, 9379125), (5, 5627475), (7, 4019625), (9, 3126375), (15, 1875825), (21, 1339875), (25, 1125495), (27, 1042125), (35, 803925), (45, 625275), (63, 446625), (75, 375165), (81, 347375), (105, 267975), (125, 225099), (135, 208425), (175, 160785), (189, 148875), (225, 125055), (315, 89325), (375, 75033), (397, 70875), (405, 69475), (525, 53595), (567, 49625), (675, 41685), (875, 32157), (945, 29775), (1125, 25011), (1191, 23625), (1575, 17865), (1985, 14175), (2025, 13895), (2625, 10719), (2779, 10125), (2835, 9925), (3375, 8337), (3573, 7875), (4725, 5955)]