81313020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3557}}^1$

素因数の和:3699

約数の個数: 72

約数和(自身を含む): 248661504

約数和(自身を除く): 167348484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 127, 180, 254, 381, 508, 635, 762, 1143, 1270, 1524, 1905, 2286, 2540, 3557, 3810, 4572, 5715, 7114, 7620, 10671, 11430, 14228, 17785, 21342, 22860, 32013, 35570, 42684, 53355, 64026, 71140, 106710, 128052, 160065, 213420, 320130, 451739, 640260, 903478, 1355217, 1806956, 2258695, 2710434, 4065651, 4517390, 5420868, 6776085, 8131302, 9034780, 13552170, 16262604, 20328255, 27104340, 40656510, 81313020]

約数ペア:

[(1, 81313020), (2, 40656510), (3, 27104340), (4, 20328255), (5, 16262604), (6, 13552170), (9, 9034780), (10, 8131302), (12, 6776085), (15, 5420868), (18, 4517390), (20, 4065651), (30, 2710434), (36, 2258695), (45, 1806956), (60, 1355217), (90, 903478), (127, 640260), (180, 451739), (254, 320130), (381, 213420), (508, 160065), (635, 128052), (762, 106710), (1143, 71140), (1270, 64026), (1524, 53355), (1905, 42684), (2286, 35570), (2540, 32013), (3557, 22860), (3810, 21342), (4572, 17785), (5715, 14228), (7114, 11430), (7620, 10671)]