405691875

素因数分解:

$3^3\times 5^4\times {\mathrm{29}}^1\times {\mathrm{829}}^1$

素因数の和:887

約数の個数: 80

約数和(自身を含む): 777876000

約数和(自身を除く): 372184125

約数列:

[1, 3, 5, 9, 15, 25, 27, 29, 45, 75, 87, 125, 135, 145, 225, 261, 375, 435, 625, 675, 725, 783, 829, 1125, 1305, 1875, 2175, 2487, 3375, 3625, 3915, 4145, 5625, 6525, 7461, 10875, 12435, 16875, 18125, 19575, 20725, 22383, 24041, 32625, 37305, 54375, 62175, 72123, 97875, 103625, 111915, 120205, 163125, 186525, 216369, 310875, 360615, 489375, 518125, 559575, 601025, 649107, 932625, 1081845, 1554375, 1803075, 2797875, 3005125, 3245535, 4663125, 5409225, 9015375, 13989375, 15025625, 16227675, 27046125, 45076875, 81138375, 135230625, 405691875]

約数ペア:

[(1, 405691875), (3, 135230625), (5, 81138375), (9, 45076875), (15, 27046125), (25, 16227675), (27, 15025625), (29, 13989375), (45, 9015375), (75, 5409225), (87, 4663125), (125, 3245535), (135, 3005125), (145, 2797875), (225, 1803075), (261, 1554375), (375, 1081845), (435, 932625), (625, 649107), (675, 601025), (725, 559575), (783, 518125), (829, 489375), (1125, 360615), (1305, 310875), (1875, 216369), (2175, 186525), (2487, 163125), (3375, 120205), (3625, 111915), (3915, 103625), (4145, 97875), (5625, 72123), (6525, 62175), (7461, 54375), (10875, 37305), (12435, 32625), (16875, 24041), (18125, 22383), (19575, 20725)]