21149295

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 34974720

約数和(自身を除く): 13825425

約数列:

[1, 3, 5, 15, 47, 131, 141, 229, 235, 393, 655, 687, 705, 1145, 1965, 3435, 6157, 10763, 18471, 29999, 30785, 32289, 53815, 89997, 92355, 149995, 161445, 449985, 1409953, 4229859, 7049765, 21149295]

約数ペア:

[(1, 21149295), (3, 7049765), (5, 4229859), (15, 1409953), (47, 449985), (131, 161445), (141, 149995), (229, 92355), (235, 89997), (393, 53815), (655, 32289), (687, 30785), (705, 29999), (1145, 18471), (1965, 10763), (3435, 6157)]