220949995

素因数分解:

$5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 308883456

約数和(自身を除く): 87933461

約数列:

[1, 5, 7, 35, 97, 151, 431, 485, 679, 755, 1057, 2155, 3017, 3395, 5285, 14647, 15085, 41807, 65081, 73235, 102529, 209035, 292649, 325405, 455567, 512645, 1463245, 2277835, 6312857, 31564285, 44189999, 220949995]

約数ペア:

[(1, 220949995), (5, 44189999), (7, 31564285), (35, 6312857), (97, 2277835), (151, 1463245), (431, 512645), (485, 455567), (679, 325405), (755, 292649), (1057, 209035), (2155, 102529), (3017, 73235), (3395, 65081), (5285, 41807), (14647, 15085)]