209914925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 294624000

約数和(自身を除く): 84709075

約数列:

[1, 5, 11, 25, 47, 55, 109, 149, 235, 275, 517, 545, 745, 1175, 1199, 1639, 2585, 2725, 3725, 5123, 5995, 7003, 8195, 12925, 16241, 25615, 29975, 35015, 40975, 56353, 77033, 81205, 128075, 175075, 178651, 281765, 385165, 406025, 763327, 893255, 1408825, 1925825, 3816635, 4466275, 8396597, 19083175, 41982985, 209914925]

約数ペア:

[(1, 209914925), (5, 41982985), (11, 19083175), (25, 8396597), (47, 4466275), (55, 3816635), (109, 1925825), (149, 1408825), (235, 893255), (275, 763327), (517, 406025), (545, 385165), (745, 281765), (1175, 178651), (1199, 175075), (1639, 128075), (2585, 81205), (2725, 77033), (3725, 56353), (5123, 40975), (5995, 35015), (7003, 29975), (8195, 25615), (12925, 16241)]