217551490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1459}}^1$

素因数の和:1547

約数の個数: 64

約数和(自身を含む): 447390720

約数和(自身を除く): 229839230

約数列:

[1, 2, 5, 10, 13, 26, 31, 37, 62, 65, 74, 130, 155, 185, 310, 370, 403, 481, 806, 962, 1147, 1459, 2015, 2294, 2405, 2918, 4030, 4810, 5735, 7295, 11470, 14590, 14911, 18967, 29822, 37934, 45229, 53983, 74555, 90458, 94835, 107966, 149110, 189670, 226145, 269915, 452290, 539830, 587977, 701779, 1175954, 1403558, 1673473, 2939885, 3346946, 3508895, 5879770, 7017790, 8367365, 16734730, 21755149, 43510298, 108775745, 217551490]

約数ペア:

[(1, 217551490), (2, 108775745), (5, 43510298), (10, 21755149), (13, 16734730), (26, 8367365), (31, 7017790), (37, 5879770), (62, 3508895), (65, 3346946), (74, 2939885), (130, 1673473), (155, 1403558), (185, 1175954), (310, 701779), (370, 587977), (403, 539830), (481, 452290), (806, 269915), (962, 226145), (1147, 189670), (1459, 149110), (2015, 107966), (2294, 94835), (2405, 90458), (2918, 74555), (4030, 53983), (4810, 45229), (5735, 37934), (7295, 29822), (11470, 18967), (14590, 14911)]