19775204

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{389}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 35380800

約数和(自身を除く): 15605596

約数列:

[1, 2, 4, 71, 142, 179, 284, 358, 389, 716, 778, 1556, 12709, 25418, 27619, 50836, 55238, 69631, 110476, 139262, 278524, 4943801, 9887602, 19775204]

約数ペア:

[(1, 19775204), (2, 9887602), (4, 4943801), (71, 278524), (142, 139262), (179, 110476), (284, 69631), (358, 55238), (389, 50836), (716, 27619), (778, 25418), (1556, 12709)]