21090810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1319}}^1$

素因数の和:1383

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 34792710

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 41, 65, 78, 82, 123, 130, 195, 205, 246, 390, 410, 533, 615, 1066, 1230, 1319, 1599, 2638, 2665, 3198, 3957, 5330, 6595, 7914, 7995, 13190, 15990, 17147, 19785, 34294, 39570, 51441, 54079, 85735, 102882, 108158, 162237, 171470, 257205, 270395, 324474, 514410, 540790, 703027, 811185, 1406054, 1622370, 2109081, 3515135, 4218162, 7030270, 10545405, 21090810]

約数ペア:

[(1, 21090810), (2, 10545405), (3, 7030270), (5, 4218162), (6, 3515135), (10, 2109081), (13, 1622370), (15, 1406054), (26, 811185), (30, 703027), (39, 540790), (41, 514410), (65, 324474), (78, 270395), (82, 257205), (123, 171470), (130, 162237), (195, 108158), (205, 102882), (246, 85735), (390, 54079), (410, 51441), (533, 39570), (615, 34294), (1066, 19785), (1230, 17147), (1319, 15990), (1599, 13190), (2638, 7995), (2665, 7914), (3198, 6595), (3957, 5330)]