21555690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2909}}^1$

素因数の和:2951

約数の個数: 64

約数和(自身を含む): 58665600

約数和(自身を除く): 37109910

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 19, 26, 30, 38, 39, 57, 65, 78, 95, 114, 130, 190, 195, 247, 285, 390, 494, 570, 741, 1235, 1482, 2470, 2909, 3705, 5818, 7410, 8727, 14545, 17454, 29090, 37817, 43635, 55271, 75634, 87270, 110542, 113451, 165813, 189085, 226902, 276355, 331626, 378170, 552710, 567255, 718523, 829065, 1134510, 1437046, 1658130, 2155569, 3592615, 4311138, 7185230, 10777845, 21555690]

約数ペア:

[(1, 21555690), (2, 10777845), (3, 7185230), (5, 4311138), (6, 3592615), (10, 2155569), (13, 1658130), (15, 1437046), (19, 1134510), (26, 829065), (30, 718523), (38, 567255), (39, 552710), (57, 378170), (65, 331626), (78, 276355), (95, 226902), (114, 189085), (130, 165813), (190, 113451), (195, 110542), (247, 87270), (285, 75634), (390, 55271), (494, 43635), (570, 37817), (741, 29090), (1235, 17454), (1482, 14545), (2470, 8727), (2909, 7410), (3705, 5818)]