221375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1$

素因数の和:56

約数の個数: 32

約数和(自身を含む): 359424

約数和(自身を除く): 138049

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 125, 161, 175, 253, 275, 385, 575, 805, 875, 1265, 1375, 1771, 1925, 2875, 4025, 6325, 8855, 9625, 20125, 31625, 44275, 221375]

約数ペア:

[(1, 221375), (5, 44275), (7, 31625), (11, 20125), (23, 9625), (25, 8855), (35, 6325), (55, 4025), (77, 2875), (115, 1925), (125, 1771), (161, 1375), (175, 1265), (253, 875), (275, 805), (385, 575)]