21504105

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3593}}^1$

素因数の和:3630

約数の個数: 48

約数和(自身を含む): 44853120

約数和(自身を除く): 23349015

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3593, 5985, 10779, 17965, 25151, 32337, 53895, 68267, 75453, 125755, 161685, 204801, 226359, 341335, 377265, 477869, 614403, 1024005, 1131795, 1433607, 2389345, 3072015, 4300821, 7168035, 21504105]

約数ペア:

[(1, 21504105), (3, 7168035), (5, 4300821), (7, 3072015), (9, 2389345), (15, 1433607), (19, 1131795), (21, 1024005), (35, 614403), (45, 477869), (57, 377265), (63, 341335), (95, 226359), (105, 204801), (133, 161685), (171, 125755), (285, 75453), (315, 68267), (399, 53895), (665, 32337), (855, 25151), (1197, 17965), (1995, 10779), (3593, 5985)]