21316575

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2137}}^1$

素因数の和:2176

約数の個数: 48

約数和(自身を含む): 42417920

約数和(自身を除く): 21101345

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 2137, 3325, 6411, 9975, 10685, 14959, 32055, 40603, 44877, 53425, 74795, 121809, 160275, 203015, 224385, 284221, 373975, 609045, 852663, 1015075, 1121925, 1421105, 3045225, 4263315, 7105525, 21316575]

約数ペア:

[(1, 21316575), (3, 7105525), (5, 4263315), (7, 3045225), (15, 1421105), (19, 1121925), (21, 1015075), (25, 852663), (35, 609045), (57, 373975), (75, 284221), (95, 224385), (105, 203015), (133, 160275), (175, 121809), (285, 74795), (399, 53425), (475, 44877), (525, 40603), (665, 32055), (1425, 14959), (1995, 10685), (2137, 9975), (3325, 6411)]