20204625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 19332015

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 43, 75, 105, 125, 129, 175, 179, 215, 301, 375, 525, 537, 645, 875, 895, 903, 1075, 1253, 1505, 2625, 2685, 3225, 3759, 4475, 4515, 5375, 6265, 7525, 7697, 13425, 16125, 18795, 22375, 22575, 23091, 31325, 37625, 38485, 53879, 67125, 93975, 112875, 115455, 156625, 161637, 192425, 269395, 469875, 577275, 808185, 962125, 1346975, 2886375, 4040925, 6734875, 20204625]

約数ペア:

[(1, 20204625), (3, 6734875), (5, 4040925), (7, 2886375), (15, 1346975), (21, 962125), (25, 808185), (35, 577275), (43, 469875), (75, 269395), (105, 192425), (125, 161637), (129, 156625), (175, 115455), (179, 112875), (215, 93975), (301, 67125), (375, 53879), (525, 38485), (537, 37625), (645, 31325), (875, 23091), (895, 22575), (903, 22375), (1075, 18795), (1253, 16125), (1505, 13425), (2625, 7697), (2685, 7525), (3225, 6265), (3759, 5375), (4475, 4515)]