21660095

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 28788480

約数和(自身を除く): 7128385

約数列:

[1, 5, 19, 41, 67, 83, 95, 205, 335, 415, 779, 1273, 1577, 2747, 3403, 3895, 5561, 6365, 7885, 13735, 17015, 27805, 52193, 64657, 105659, 228001, 260965, 323285, 528295, 1140005, 4332019, 21660095]

約数ペア:

[(1, 21660095), (5, 4332019), (19, 1140005), (41, 528295), (67, 323285), (83, 260965), (95, 228001), (205, 105659), (335, 64657), (415, 52193), (779, 27805), (1273, 17015), (1577, 13735), (2747, 7885), (3403, 6365), (3895, 5561)]