21949705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 7246583

約数列:

[1, 5, 23, 31, 47, 115, 131, 155, 235, 655, 713, 1081, 1457, 3013, 3565, 4061, 5405, 6157, 7285, 15065, 20305, 30785, 33511, 93403, 141611, 167555, 190867, 467015, 708055, 954335, 4389941, 21949705]

約数ペア:

[(1, 21949705), (5, 4389941), (23, 954335), (31, 708055), (47, 467015), (115, 190867), (131, 167555), (155, 141611), (235, 93403), (655, 33511), (713, 30785), (1081, 20305), (1457, 15065), (3013, 7285), (3565, 6157), (4061, 5405)]