81131505

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1255

約数の個数: 64

約数和(自身を含む): 163161600

約数和(自身を除く): 82030095

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 343, 455, 637, 735, 1029, 1213, 1365, 1715, 1911, 3185, 3639, 4459, 5145, 6065, 8491, 9555, 13377, 15769, 18195, 22295, 25473, 42455, 47307, 59437, 66885, 78845, 110383, 127365, 178311, 236535, 297185, 331149, 416059, 551915, 772681, 891555, 1248177, 1655745, 2080295, 2318043, 3863405, 5408767, 6240885, 11590215, 16226301, 27043835, 81131505]

約数ペア:

[(1, 81131505), (3, 27043835), (5, 16226301), (7, 11590215), (13, 6240885), (15, 5408767), (21, 3863405), (35, 2318043), (39, 2080295), (49, 1655745), (65, 1248177), (91, 891555), (105, 772681), (147, 551915), (195, 416059), (245, 331149), (273, 297185), (343, 236535), (455, 178311), (637, 127365), (735, 110383), (1029, 78845), (1213, 66885), (1365, 59437), (1715, 47307), (1911, 42455), (3185, 25473), (3639, 22295), (4459, 18195), (5145, 15769), (6065, 13377), (8491, 9555)]