21249960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2903}}^1$

素因数の和:2978

約数の個数: 64

約数和(自身を含む): 64817280

約数和(自身を除く): 43567320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2903, 3660, 5806, 7320, 8709, 11612, 14515, 17418, 23224, 29030, 34836, 43545, 58060, 69672, 87090, 116120, 174180, 177083, 348360, 354166, 531249, 708332, 885415, 1062498, 1416664, 1770830, 2124996, 2656245, 3541660, 4249992, 5312490, 7083320, 10624980, 21249960]

約数ペア:

[(1, 21249960), (2, 10624980), (3, 7083320), (4, 5312490), (5, 4249992), (6, 3541660), (8, 2656245), (10, 2124996), (12, 1770830), (15, 1416664), (20, 1062498), (24, 885415), (30, 708332), (40, 531249), (60, 354166), (61, 348360), (120, 177083), (122, 174180), (183, 116120), (244, 87090), (305, 69672), (366, 58060), (488, 43545), (610, 34836), (732, 29030), (915, 23224), (1220, 17418), (1464, 14515), (1830, 11612), (2440, 8709), (2903, 7320), (3660, 5806)]