21972475

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 33426432

約数和(自身を除く): 11453957

約数列:

[1, 5, 7, 23, 25, 35, 53, 103, 115, 161, 175, 265, 371, 515, 575, 721, 805, 1219, 1325, 1855, 2369, 2575, 3605, 4025, 5459, 6095, 8533, 9275, 11845, 16583, 18025, 27295, 30475, 38213, 42665, 59225, 82915, 125557, 136475, 191065, 213325, 414575, 627785, 878899, 955325, 3138925, 4394495, 21972475]

約数ペア:

[(1, 21972475), (5, 4394495), (7, 3138925), (23, 955325), (25, 878899), (35, 627785), (53, 414575), (103, 213325), (115, 191065), (161, 136475), (175, 125557), (265, 82915), (371, 59225), (515, 42665), (575, 38213), (721, 30475), (805, 27295), (1219, 18025), (1325, 16583), (1855, 11845), (2369, 9275), (2575, 8533), (3605, 6095), (4025, 5459)]