19859968125

素因数分解:

$3^3\times 5^4\times {\mathrm{23}}^1\times {\mathrm{51169}}^1$

素因数の和:51221

約数の個数: 80

約数和(自身を含む): 38365219200

約数和(自身を除く): 18505251075

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 125, 135, 207, 225, 345, 375, 575, 621, 625, 675, 1035, 1125, 1725, 1875, 2875, 3105, 3375, 5175, 5625, 8625, 14375, 15525, 16875, 25875, 43125, 51169, 77625, 129375, 153507, 255845, 388125, 460521, 767535, 1176887, 1279225, 1381563, 2302605, 3530661, 3837675, 5884435, 6396125, 6907815, 10591983, 11513025, 17653305, 19188375, 29422175, 31775949, 31980625, 34539075, 52959915, 57565125, 88266525, 95941875, 147110875, 158879745, 172695375, 264799575, 287825625, 441332625, 735554375, 794398725, 863476875, 1323997875, 2206663125, 3971993625, 6619989375, 19859968125]

約数ペア:

[(1, 19859968125), (3, 6619989375), (5, 3971993625), (9, 2206663125), (15, 1323997875), (23, 863476875), (25, 794398725), (27, 735554375), (45, 441332625), (69, 287825625), (75, 264799575), (115, 172695375), (125, 158879745), (135, 147110875), (207, 95941875), (225, 88266525), (345, 57565125), (375, 52959915), (575, 34539075), (621, 31980625), (625, 31775949), (675, 29422175), (1035, 19188375), (1125, 17653305), (1725, 11513025), (1875, 10591983), (2875, 6907815), (3105, 6396125), (3375, 5884435), (5175, 3837675), (5625, 3530661), (8625, 2302605), (14375, 1381563), (15525, 1279225), (16875, 1176887), (25875, 767535), (43125, 460521), (51169, 388125), (77625, 255845), (129375, 153507)]