81556880

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 198469440

約数和(自身を除く): 116912560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 59, 74, 80, 118, 148, 185, 236, 295, 296, 370, 467, 472, 590, 592, 740, 934, 944, 1180, 1480, 1868, 2183, 2335, 2360, 2960, 3736, 4366, 4670, 4720, 7472, 8732, 9340, 10915, 17279, 17464, 18680, 21830, 27553, 34558, 34928, 37360, 43660, 55106, 69116, 86395, 87320, 110212, 137765, 138232, 172790, 174640, 220424, 275530, 276464, 345580, 440848, 551060, 691160, 1019461, 1102120, 1382320, 2038922, 2204240, 4077844, 5097305, 8155688, 10194610, 16311376, 20389220, 40778440, 81556880]

約数ペア:

[(1, 81556880), (2, 40778440), (4, 20389220), (5, 16311376), (8, 10194610), (10, 8155688), (16, 5097305), (20, 4077844), (37, 2204240), (40, 2038922), (59, 1382320), (74, 1102120), (80, 1019461), (118, 691160), (148, 551060), (185, 440848), (236, 345580), (295, 276464), (296, 275530), (370, 220424), (467, 174640), (472, 172790), (590, 138232), (592, 137765), (740, 110212), (934, 87320), (944, 86395), (1180, 69116), (1480, 55106), (1868, 43660), (2183, 37360), (2335, 34928), (2360, 34558), (2960, 27553), (3736, 21830), (4366, 18680), (4670, 17464), (4720, 17279), (7472, 10915), (8732, 9340)]