21489078

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{149}}^1$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 47703600

約数和(自身を除く): 26214522

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 149, 258, 298, 447, 559, 894, 1118, 1677, 1849, 1937, 3354, 3698, 3874, 5547, 5811, 6407, 11094, 11622, 12814, 19221, 24037, 38442, 48074, 72111, 83291, 144222, 166582, 249873, 275501, 499746, 551002, 826503, 1653006, 3581513, 7163026, 10744539, 21489078]

約数ペア:

[(1, 21489078), (2, 10744539), (3, 7163026), (6, 3581513), (13, 1653006), (26, 826503), (39, 551002), (43, 499746), (78, 275501), (86, 249873), (129, 166582), (149, 144222), (258, 83291), (298, 72111), (447, 48074), (559, 38442), (894, 24037), (1118, 19221), (1677, 12814), (1849, 11622), (1937, 11094), (3354, 6407), (3698, 5811), (3874, 5547)]