20271625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 28843776

約数和(自身を除く): 8572151

約数列:

[1, 5, 11, 23, 25, 55, 115, 125, 253, 275, 575, 641, 1265, 1375, 2875, 3205, 6325, 7051, 14743, 16025, 31625, 35255, 73715, 80125, 162173, 176275, 368575, 810865, 881375, 1842875, 4054325, 20271625]

約数ペア:

[(1, 20271625), (5, 4054325), (11, 1842875), (23, 881375), (25, 810865), (55, 368575), (115, 176275), (125, 162173), (253, 80125), (275, 73715), (575, 35255), (641, 31625), (1265, 16025), (1375, 14743), (2875, 7051), (3205, 6325)]