21711015

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 40310400

約数和(自身を除く): 18599385

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 67, 95, 171, 201, 285, 335, 379, 603, 855, 1005, 1137, 1273, 1895, 3015, 3411, 3819, 5685, 6365, 7201, 11457, 17055, 19095, 21603, 25393, 36005, 57285, 64809, 76179, 108015, 126965, 228537, 324045, 380895, 482467, 1142685, 1447401, 2412335, 4342203, 7237005, 21711015]

約数ペア:

[(1, 21711015), (3, 7237005), (5, 4342203), (9, 2412335), (15, 1447401), (19, 1142685), (45, 482467), (57, 380895), (67, 324045), (95, 228537), (171, 126965), (201, 108015), (285, 76179), (335, 64809), (379, 57285), (603, 36005), (855, 25393), (1005, 21603), (1137, 19095), (1273, 17055), (1895, 11457), (3015, 7201), (3411, 6365), (3819, 5685)]