287972020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{9479}}^1$

素因数の和:9533

約数の個数: 72

約数和(自身を含む): 726243840

約数和(自身を除く): 438271820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4340, 6076, 7595, 9479, 15190, 18958, 30380, 37916, 47395, 66353, 94790, 132706, 189580, 265412, 293849, 331765, 464471, 587698, 663530, 928942, 1175396, 1327060, 1469245, 1857884, 2056943, 2322355, 2938490, 4113886, 4644710, 5876980, 8227772, 9289420, 10284715, 14398601, 20569430, 28797202, 41138860, 57594404, 71993005, 143986010, 287972020]

約数ペア:

[(1, 287972020), (2, 143986010), (4, 71993005), (5, 57594404), (7, 41138860), (10, 28797202), (14, 20569430), (20, 14398601), (28, 10284715), (31, 9289420), (35, 8227772), (49, 5876980), (62, 4644710), (70, 4113886), (98, 2938490), (124, 2322355), (140, 2056943), (155, 1857884), (196, 1469245), (217, 1327060), (245, 1175396), (310, 928942), (434, 663530), (490, 587698), (620, 464471), (868, 331765), (980, 293849), (1085, 265412), (1519, 189580), (2170, 132706), (3038, 94790), (4340, 66353), (6076, 47395), (7595, 37916), (9479, 30380), (15190, 18958)]