20118195

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 36777312

約数和(自身を除く): 16659117

約数列:

[1, 3, 5, 9, 15, 37, 43, 45, 111, 129, 185, 215, 281, 333, 387, 555, 645, 843, 1405, 1591, 1665, 1935, 2529, 4215, 4773, 7955, 10397, 12083, 12645, 14319, 23865, 31191, 36249, 51985, 60415, 71595, 93573, 108747, 155955, 181245, 447071, 467865, 543735, 1341213, 2235355, 4023639, 6706065, 20118195]

約数ペア:

[(1, 20118195), (3, 6706065), (5, 4023639), (9, 2235355), (15, 1341213), (37, 543735), (43, 467865), (45, 447071), (111, 181245), (129, 155955), (185, 108747), (215, 93573), (281, 71595), (333, 60415), (387, 51985), (555, 36249), (645, 31191), (843, 23865), (1405, 14319), (1591, 12645), (1665, 12083), (1935, 10397), (2529, 7955), (4215, 4773)]