20793885

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1489}}^1$

素因数の和:1530

約数の個数: 48

約数和(自身を含む): 40766400

約数和(自身を除く): 19972515

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1489, 1995, 2793, 4467, 4655, 7445, 10423, 13965, 22335, 28291, 31269, 52115, 72961, 84873, 141455, 156345, 198037, 218883, 364805, 424365, 594111, 990185, 1094415, 1386259, 2970555, 4158777, 6931295, 20793885]

約数ペア:

[(1, 20793885), (3, 6931295), (5, 4158777), (7, 2970555), (15, 1386259), (19, 1094415), (21, 990185), (35, 594111), (49, 424365), (57, 364805), (95, 218883), (105, 198037), (133, 156345), (147, 141455), (245, 84873), (285, 72961), (399, 52115), (665, 31269), (735, 28291), (931, 22335), (1489, 13965), (1995, 10423), (2793, 7445), (4467, 4655)]