21223665

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 39262080

約数和(自身を除く): 18038415

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 103, 171, 241, 285, 309, 515, 723, 855, 927, 1205, 1545, 1957, 2169, 3615, 4579, 4635, 5871, 9785, 10845, 13737, 17613, 22895, 24823, 29355, 41211, 68685, 74469, 88065, 124115, 206055, 223407, 372345, 471637, 1117035, 1414911, 2358185, 4244733, 7074555, 21223665]

約数ペア:

[(1, 21223665), (3, 7074555), (5, 4244733), (9, 2358185), (15, 1414911), (19, 1117035), (45, 471637), (57, 372345), (95, 223407), (103, 206055), (171, 124115), (241, 88065), (285, 74469), (309, 68685), (515, 41211), (723, 29355), (855, 24823), (927, 22895), (1205, 17613), (1545, 13737), (1957, 10845), (2169, 9785), (3615, 5871), (4579, 4635)]