21417225

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 37646400

約数和(自身を除く): 16229175

約数列:

[1, 3, 5, 15, 25, 29, 43, 75, 87, 129, 145, 215, 229, 435, 645, 687, 725, 1075, 1145, 1247, 2175, 3225, 3435, 3741, 5725, 6235, 6641, 9847, 17175, 18705, 19923, 29541, 31175, 33205, 49235, 93525, 99615, 147705, 166025, 246175, 285563, 498075, 738525, 856689, 1427815, 4283445, 7139075, 21417225]

約数ペア:

[(1, 21417225), (3, 7139075), (5, 4283445), (15, 1427815), (25, 856689), (29, 738525), (43, 498075), (75, 285563), (87, 246175), (129, 166025), (145, 147705), (215, 99615), (229, 93525), (435, 49235), (645, 33205), (687, 31175), (725, 29541), (1075, 19923), (1145, 18705), (1247, 17175), (2175, 9847), (3225, 6641), (3435, 6235), (3741, 5725)]