86905420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1343

約数の個数: 72

約数和(自身を含む): 215460000

約数和(自身を除く): 128554580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1249, 1420, 1988, 2485, 2498, 3479, 4970, 4996, 6245, 6958, 8743, 9940, 12490, 13916, 17395, 17486, 24980, 34790, 34972, 43715, 61201, 69580, 87430, 88679, 122402, 174860, 177358, 244804, 306005, 354716, 443395, 612010, 620753, 886790, 1224020, 1241506, 1773580, 2483012, 3103765, 4345271, 6207530, 8690542, 12415060, 17381084, 21726355, 43452710, 86905420]

約数ペア:

[(1, 86905420), (2, 43452710), (4, 21726355), (5, 17381084), (7, 12415060), (10, 8690542), (14, 6207530), (20, 4345271), (28, 3103765), (35, 2483012), (49, 1773580), (70, 1241506), (71, 1224020), (98, 886790), (140, 620753), (142, 612010), (196, 443395), (245, 354716), (284, 306005), (355, 244804), (490, 177358), (497, 174860), (710, 122402), (980, 88679), (994, 87430), (1249, 69580), (1420, 61201), (1988, 43715), (2485, 34972), (2498, 34790), (3479, 24980), (4970, 17486), (4996, 17395), (6245, 13916), (6958, 12490), (8743, 9940)]