21572187

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2549}}^1$

素因数の和:2603

約数の個数: 32

約数和(自身を含む): 36556800

約数和(自身を除く): 14984613

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2549, 2821, 7647, 8463, 17843, 33137, 53529, 79019, 99411, 231959, 237057, 553133, 695877, 1027247, 1659399, 3081741, 7190729, 21572187]

約数ペア:

[(1, 21572187), (3, 7190729), (7, 3081741), (13, 1659399), (21, 1027247), (31, 695877), (39, 553133), (91, 237057), (93, 231959), (217, 99411), (273, 79019), (403, 53529), (651, 33137), (1209, 17843), (2549, 8463), (2821, 7647)]