21601818

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{991}}^1$

素因数の和:1179

約数の個数: 48

約数和(自身を含む): 53853696

約数和(自身を除く): 32251878

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 173, 346, 519, 991, 1038, 1211, 1557, 1982, 2422, 2973, 3114, 3633, 5946, 6937, 7266, 8919, 10899, 13874, 17838, 20811, 21798, 41622, 62433, 124866, 171443, 342886, 514329, 1028658, 1200101, 1542987, 2400202, 3085974, 3600303, 7200606, 10800909, 21601818]

約数ペア:

[(1, 21601818), (2, 10800909), (3, 7200606), (6, 3600303), (7, 3085974), (9, 2400202), (14, 1542987), (18, 1200101), (21, 1028658), (42, 514329), (63, 342886), (126, 171443), (173, 124866), (346, 62433), (519, 41622), (991, 21798), (1038, 20811), (1211, 17838), (1557, 13874), (1982, 10899), (2422, 8919), (2973, 7266), (3114, 6937), (3633, 5946)]