408903980

素因数分解:

$2^2\times 5^1\times {\mathrm{2339}}^1\times {\mathrm{8741}}^1$

素因数の和:11089

約数の個数: 24

約数和(自身を含む): 859163760

約数和(自身を除く): 450259780

約数列:

[1, 2, 4, 5, 10, 20, 2339, 4678, 8741, 9356, 11695, 17482, 23390, 34964, 43705, 46780, 87410, 174820, 20445199, 40890398, 81780796, 102225995, 204451990, 408903980]

約数ペア:

[(1, 408903980), (2, 204451990), (4, 102225995), (5, 81780796), (10, 40890398), (20, 20445199), (2339, 174820), (4678, 87410), (8741, 46780), (9356, 43705), (11695, 34964), (17482, 23390)]