81219420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4217}}^1$

素因数の和:4339

約数の個数: 72

約数和(自身を含む): 248727024

約数和(自身を除く): 167507604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 107, 180, 214, 321, 428, 535, 642, 963, 1070, 1284, 1605, 1926, 2140, 3210, 3852, 4217, 4815, 6420, 8434, 9630, 12651, 16868, 19260, 21085, 25302, 37953, 42170, 50604, 63255, 75906, 84340, 126510, 151812, 189765, 253020, 379530, 451219, 759060, 902438, 1353657, 1804876, 2256095, 2707314, 4060971, 4512190, 5414628, 6768285, 8121942, 9024380, 13536570, 16243884, 20304855, 27073140, 40609710, 81219420]

約数ペア:

[(1, 81219420), (2, 40609710), (3, 27073140), (4, 20304855), (5, 16243884), (6, 13536570), (9, 9024380), (10, 8121942), (12, 6768285), (15, 5414628), (18, 4512190), (20, 4060971), (30, 2707314), (36, 2256095), (45, 1804876), (60, 1353657), (90, 902438), (107, 759060), (180, 451219), (214, 379530), (321, 253020), (428, 189765), (535, 151812), (642, 126510), (963, 84340), (1070, 75906), (1284, 63255), (1605, 50604), (1926, 42170), (2140, 37953), (3210, 25302), (3852, 21085), (4217, 19260), (4815, 16868), (6420, 12651), (8434, 9630)]