81644580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1109}}^1$

素因数の和:1533

約数の個数: 72

約数和(自身を含む): 248484600

約数和(自身を除く): 166840020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 409, 818, 1109, 1227, 1636, 2045, 2218, 2454, 3327, 3681, 4090, 4436, 4908, 5545, 6135, 6654, 7362, 8180, 9981, 11090, 12270, 13308, 14724, 16635, 18405, 19962, 22180, 24540, 33270, 36810, 39924, 49905, 66540, 73620, 99810, 199620, 453581, 907162, 1360743, 1814324, 2267905, 2721486, 4082229, 4535810, 5442972, 6803715, 8164458, 9071620, 13607430, 16328916, 20411145, 27214860, 40822290, 81644580]

約数ペア:

[(1, 81644580), (2, 40822290), (3, 27214860), (4, 20411145), (5, 16328916), (6, 13607430), (9, 9071620), (10, 8164458), (12, 6803715), (15, 5442972), (18, 4535810), (20, 4082229), (30, 2721486), (36, 2267905), (45, 1814324), (60, 1360743), (90, 907162), (180, 453581), (409, 199620), (818, 99810), (1109, 73620), (1227, 66540), (1636, 49905), (2045, 39924), (2218, 36810), (2454, 33270), (3327, 24540), (3681, 22180), (4090, 19962), (4436, 18405), (4908, 16635), (5545, 14724), (6135, 13308), (6654, 12270), (7362, 11090), (8180, 9981)]