21754395

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:972

約数の個数: 48

約数和(自身を含む): 41644512

約数和(自身を除く): 19890117

約数列:

[1, 3, 5, 9, 13, 15, 39, 41, 45, 65, 117, 123, 195, 205, 369, 533, 585, 615, 907, 1599, 1845, 2665, 2721, 4535, 4797, 7995, 8163, 11791, 13605, 23985, 35373, 37187, 40815, 58955, 106119, 111561, 176865, 185935, 334683, 483431, 530595, 557805, 1450293, 1673415, 2417155, 4350879, 7251465, 21754395]

約数ペア:

[(1, 21754395), (3, 7251465), (5, 4350879), (9, 2417155), (13, 1673415), (15, 1450293), (39, 557805), (41, 530595), (45, 483431), (65, 334683), (117, 185935), (123, 176865), (195, 111561), (205, 106119), (369, 58955), (533, 40815), (585, 37187), (615, 35373), (907, 23985), (1599, 13605), (1845, 11791), (2665, 8163), (2721, 7995), (4535, 4797)]