21053784

素因数分解:

$2^3\times 3^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 54505440

約数和(自身を除く): 33451656

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 61, 73, 122, 146, 183, 197, 219, 244, 292, 366, 394, 438, 488, 584, 591, 732, 788, 876, 1182, 1464, 1576, 1752, 2364, 4453, 4728, 8906, 12017, 13359, 14381, 17812, 24034, 26718, 28762, 35624, 36051, 43143, 48068, 53436, 57524, 72102, 86286, 96136, 106872, 115048, 144204, 172572, 288408, 345144, 877241, 1754482, 2631723, 3508964, 5263446, 7017928, 10526892, 21053784]

約数ペア:

[(1, 21053784), (2, 10526892), (3, 7017928), (4, 5263446), (6, 3508964), (8, 2631723), (12, 1754482), (24, 877241), (61, 345144), (73, 288408), (122, 172572), (146, 144204), (183, 115048), (197, 106872), (219, 96136), (244, 86286), (292, 72102), (366, 57524), (394, 53436), (438, 48068), (488, 43143), (584, 36051), (591, 35624), (732, 28762), (788, 26718), (876, 24034), (1182, 17812), (1464, 14381), (1576, 13359), (1752, 12017), (2364, 8906), (4453, 4728)]