31415020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 96

約数和(自身を含む): 83373696

約数和(自身を除く): 51958676

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 287, 364, 410, 421, 455, 533, 574, 820, 842, 910, 1066, 1148, 1435, 1684, 1820, 2105, 2132, 2665, 2870, 2947, 3731, 4210, 5330, 5473, 5740, 5894, 7462, 8420, 10660, 10946, 11788, 14735, 14924, 17261, 18655, 21892, 27365, 29470, 34522, 37310, 38311, 54730, 58940, 69044, 74620, 76622, 86305, 109460, 120827, 153244, 172610, 191555, 224393, 241654, 345220, 383110, 448786, 483308, 604135, 766220, 897572, 1121965, 1208270, 1570751, 2243930, 2416540, 3141502, 4487860, 6283004, 7853755, 15707510, 31415020]

約数ペア:

[(1, 31415020), (2, 15707510), (4, 7853755), (5, 6283004), (7, 4487860), (10, 3141502), (13, 2416540), (14, 2243930), (20, 1570751), (26, 1208270), (28, 1121965), (35, 897572), (41, 766220), (52, 604135), (65, 483308), (70, 448786), (82, 383110), (91, 345220), (130, 241654), (140, 224393), (164, 191555), (182, 172610), (205, 153244), (260, 120827), (287, 109460), (364, 86305), (410, 76622), (421, 74620), (455, 69044), (533, 58940), (574, 54730), (820, 38311), (842, 37310), (910, 34522), (1066, 29470), (1148, 27365), (1435, 21892), (1684, 18655), (1820, 17261), (2105, 14924), (2132, 14735), (2665, 11788), (2870, 10946), (2947, 10660), (3731, 8420), (4210, 7462), (5330, 5894), (5473, 5740)]