21392530

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{331}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 40445568

約数和(自身を除く): 19053038

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 281, 331, 562, 662, 1405, 1655, 2810, 3310, 6463, 7613, 12926, 15226, 32315, 38065, 64630, 76130, 93011, 186022, 465055, 930110, 2139253, 4278506, 10696265, 21392530]

約数ペア:

[(1, 21392530), (2, 10696265), (5, 4278506), (10, 2139253), (23, 930110), (46, 465055), (115, 186022), (230, 93011), (281, 76130), (331, 64630), (562, 38065), (662, 32315), (1405, 15226), (1655, 12926), (2810, 7613), (3310, 6463)]