28509910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19937}}^1$

素因数の和:19968

約数の個数: 32

約数和(自身を含む): 60292512

約数和(自身を除く): 31782602

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 19937, 39874, 99685, 199370, 219307, 259181, 438614, 518362, 1096535, 1295905, 2193070, 2591810, 2850991, 5701982, 14254955, 28509910]

約数ペア:

[(1, 28509910), (2, 14254955), (5, 5701982), (10, 2850991), (11, 2591810), (13, 2193070), (22, 1295905), (26, 1096535), (55, 518362), (65, 438614), (110, 259181), (130, 219307), (143, 199370), (286, 99685), (715, 39874), (1430, 19937)]