20651475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 16846125

約数列:

[1, 3, 5, 13, 15, 25, 39, 59, 65, 75, 177, 195, 295, 325, 359, 767, 885, 975, 1077, 1475, 1795, 2301, 3835, 4425, 4667, 5385, 8975, 11505, 14001, 19175, 21181, 23335, 26925, 57525, 63543, 70005, 105905, 116675, 275353, 317715, 350025, 529525, 826059, 1376765, 1588575, 4130295, 6883825, 20651475]

約数ペア:

[(1, 20651475), (3, 6883825), (5, 4130295), (13, 1588575), (15, 1376765), (25, 826059), (39, 529525), (59, 350025), (65, 317715), (75, 275353), (177, 116675), (195, 105905), (295, 70005), (325, 63543), (359, 57525), (767, 26925), (885, 23335), (975, 21181), (1077, 19175), (1475, 14001), (1795, 11505), (2301, 8975), (3835, 5385), (4425, 4667)]