28211655

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 46632960

約数和(自身を除く): 18421305

約数列:

[1, 3, 5, 15, 43, 129, 191, 215, 229, 573, 645, 687, 955, 1145, 2865, 3435, 8213, 9847, 24639, 29541, 41065, 43739, 49235, 123195, 131217, 147705, 218695, 656085, 1880777, 5642331, 9403885, 28211655]

約数ペア:

[(1, 28211655), (3, 9403885), (5, 5642331), (15, 1880777), (43, 656085), (129, 218695), (191, 147705), (215, 131217), (229, 123195), (573, 49235), (645, 43739), (687, 41065), (955, 29541), (1145, 24639), (2865, 9847), (3435, 8213)]