21174490

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2141}}^1$

素因数の和:2214

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 19540646

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2141, 4282, 4945, 9890, 10705, 21410, 49243, 92063, 98486, 184126, 246215, 460315, 492430, 920630, 2117449, 4234898, 10587245, 21174490]

約数ペア:

[(1, 21174490), (2, 10587245), (5, 4234898), (10, 2117449), (23, 920630), (43, 492430), (46, 460315), (86, 246215), (115, 184126), (215, 98486), (230, 92063), (430, 49243), (989, 21410), (1978, 10705), (2141, 9890), (4282, 4945)]