51319980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:501

約数の個数: 120

約数和(自身を含む): 163437120

約数和(自身を除く): 112117140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 79, 81, 90, 108, 135, 158, 162, 180, 237, 270, 316, 324, 395, 401, 405, 474, 540, 711, 790, 802, 810, 948, 1185, 1203, 1422, 1580, 1604, 1620, 2005, 2133, 2370, 2406, 2844, 3555, 3609, 4010, 4266, 4740, 4812, 6015, 6399, 7110, 7218, 8020, 8532, 10665, 10827, 12030, 12798, 14220, 14436, 18045, 21330, 21654, 24060, 25596, 31679, 31995, 32481, 36090, 42660, 43308, 54135, 63358, 63990, 64962, 72180, 95037, 108270, 126716, 127980, 129924, 158395, 162405, 190074, 216540, 285111, 316790, 324810, 380148, 475185, 570222, 633580, 649620, 855333, 950370, 1140444, 1425555, 1710666, 1900740, 2565999, 2851110, 3421332, 4276665, 5131998, 5702220, 8553330, 10263996, 12829995, 17106660, 25659990, 51319980]

約数ペア:

[(1, 51319980), (2, 25659990), (3, 17106660), (4, 12829995), (5, 10263996), (6, 8553330), (9, 5702220), (10, 5131998), (12, 4276665), (15, 3421332), (18, 2851110), (20, 2565999), (27, 1900740), (30, 1710666), (36, 1425555), (45, 1140444), (54, 950370), (60, 855333), (79, 649620), (81, 633580), (90, 570222), (108, 475185), (135, 380148), (158, 324810), (162, 316790), (180, 285111), (237, 216540), (270, 190074), (316, 162405), (324, 158395), (395, 129924), (401, 127980), (405, 126716), (474, 108270), (540, 95037), (711, 72180), (790, 64962), (802, 63990), (810, 63358), (948, 54135), (1185, 43308), (1203, 42660), (1422, 36090), (1580, 32481), (1604, 31995), (1620, 31679), (2005, 25596), (2133, 24060), (2370, 21654), (2406, 21330), (2844, 18045), (3555, 14436), (3609, 14220), (4010, 12798), (4266, 12030), (4740, 10827), (4812, 10665), (6015, 8532), (6399, 8020), (7110, 7218)]