20921586

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 50284800

約数和(自身を除く): 29363214

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 89, 174, 178, 193, 203, 267, 386, 406, 534, 579, 609, 623, 1158, 1218, 1246, 1351, 1869, 2581, 2702, 3738, 4053, 5162, 5597, 7743, 8106, 11194, 15486, 16791, 17177, 18067, 33582, 34354, 36134, 39179, 51531, 54201, 78358, 103062, 108402, 117537, 120239, 235074, 240478, 360717, 498133, 721434, 996266, 1494399, 2988798, 3486931, 6973862, 10460793, 20921586]

約数ペア:

[(1, 20921586), (2, 10460793), (3, 6973862), (6, 3486931), (7, 2988798), (14, 1494399), (21, 996266), (29, 721434), (42, 498133), (58, 360717), (87, 240478), (89, 235074), (174, 120239), (178, 117537), (193, 108402), (203, 103062), (267, 78358), (386, 54201), (406, 51531), (534, 39179), (579, 36134), (609, 34354), (623, 33582), (1158, 18067), (1218, 17177), (1246, 16791), (1351, 15486), (1869, 11194), (2581, 8106), (2702, 7743), (3738, 5597), (4053, 5162)]