21551835

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{379}}^1$

素因数の和:627

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 15220005

約数列:

[1, 3, 5, 15, 17, 51, 85, 223, 255, 379, 669, 1115, 1137, 1895, 3345, 3791, 5685, 6443, 11373, 18955, 19329, 32215, 56865, 84517, 96645, 253551, 422585, 1267755, 1436789, 4310367, 7183945, 21551835]

約数ペア:

[(1, 21551835), (3, 7183945), (5, 4310367), (15, 1436789), (17, 1267755), (51, 422585), (85, 253551), (223, 96645), (255, 84517), (379, 56865), (669, 32215), (1115, 19329), (1137, 18955), (1895, 11373), (3345, 6443), (3791, 5685)]