40739920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:980

約数の個数: 80

約数和(自身を含む): 104493312

約数和(自身を除く): 63753392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 911, 1040, 1118, 1720, 1822, 2236, 2795, 3440, 3644, 4472, 4555, 5590, 7288, 8944, 9110, 11180, 11843, 14576, 18220, 22360, 23686, 36440, 39173, 44720, 47372, 59215, 72880, 78346, 94744, 118430, 156692, 189488, 195865, 236860, 313384, 391730, 473720, 509249, 626768, 783460, 947440, 1018498, 1566920, 2036996, 2546245, 3133840, 4073992, 5092490, 8147984, 10184980, 20369960, 40739920]

約数ペア:

[(1, 40739920), (2, 20369960), (4, 10184980), (5, 8147984), (8, 5092490), (10, 4073992), (13, 3133840), (16, 2546245), (20, 2036996), (26, 1566920), (40, 1018498), (43, 947440), (52, 783460), (65, 626768), (80, 509249), (86, 473720), (104, 391730), (130, 313384), (172, 236860), (208, 195865), (215, 189488), (260, 156692), (344, 118430), (430, 94744), (520, 78346), (559, 72880), (688, 59215), (860, 47372), (911, 44720), (1040, 39173), (1118, 36440), (1720, 23686), (1822, 22360), (2236, 18220), (2795, 14576), (3440, 11843), (3644, 11180), (4472, 9110), (4555, 8944), (5590, 7288)]