20628125

素因数分解:

$5^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:96

約数の個数: 48

約数和(自身を含む): 31497984

約数和(自身を除く): 10869859

約数列:

[1, 5, 7, 23, 25, 35, 41, 115, 125, 161, 175, 205, 287, 575, 625, 805, 875, 943, 1025, 1435, 2875, 3125, 4025, 4375, 4715, 5125, 6601, 7175, 14375, 20125, 21875, 23575, 25625, 33005, 35875, 71875, 100625, 117875, 128125, 165025, 179375, 503125, 589375, 825125, 896875, 2946875, 4125625, 20628125]

約数ペア:

[(1, 20628125), (5, 4125625), (7, 2946875), (23, 896875), (25, 825125), (35, 589375), (41, 503125), (115, 179375), (125, 165025), (161, 128125), (175, 117875), (205, 100625), (287, 71875), (575, 35875), (625, 33005), (805, 25625), (875, 23575), (943, 21875), (1025, 20125), (1435, 14375), (2875, 7175), (3125, 6601), (4025, 5125), (4375, 4715)]