21023695

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 33242400

約数和(自身を除く): 12218705

約数列:

[1, 5, 7, 11, 29, 35, 49, 55, 77, 145, 203, 245, 269, 319, 385, 539, 1015, 1345, 1421, 1595, 1883, 2233, 2695, 2959, 7105, 7801, 9415, 11165, 13181, 14795, 15631, 20713, 39005, 54607, 65905, 78155, 85811, 103565, 144991, 273035, 382249, 429055, 600677, 724955, 1911245, 3003385, 4204739, 21023695]

約数ペア:

[(1, 21023695), (5, 4204739), (7, 3003385), (11, 1911245), (29, 724955), (35, 600677), (49, 429055), (55, 382249), (77, 273035), (145, 144991), (203, 103565), (245, 85811), (269, 78155), (319, 65905), (385, 54607), (539, 39005), (1015, 20713), (1345, 15631), (1421, 14795), (1595, 13181), (1883, 11165), (2233, 9415), (2695, 7801), (2959, 7105)]