1289285420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1\times {\mathrm{4391}}^1$

素因数の和:4730

約数の個数: 48

約数和(自身を含む): 2769173568

約数和(自身を除く): 1479888148

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 277, 530, 554, 1060, 1108, 1385, 2770, 4391, 5540, 8782, 14681, 17564, 21955, 29362, 43910, 58724, 73405, 87820, 146810, 232723, 293620, 465446, 930892, 1163615, 1216307, 2327230, 2432614, 4654460, 4865228, 6081535, 12163070, 24326140, 64464271, 128928542, 257857084, 322321355, 644642710, 1289285420]

約数ペア:

[(1, 1289285420), (2, 644642710), (4, 322321355), (5, 257857084), (10, 128928542), (20, 64464271), (53, 24326140), (106, 12163070), (212, 6081535), (265, 4865228), (277, 4654460), (530, 2432614), (554, 2327230), (1060, 1216307), (1108, 1163615), (1385, 930892), (2770, 465446), (4391, 293620), (5540, 232723), (8782, 146810), (14681, 87820), (17564, 73405), (21955, 58724), (29362, 43910)]