21217290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8521}}^1$

素因数の和:8614

約数の個数: 32

約数和(自身を含む): 51541056

約数和(自身を除く): 30323766

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 83, 166, 249, 415, 498, 830, 1245, 2490, 8521, 17042, 25563, 42605, 51126, 85210, 127815, 255630, 707243, 1414486, 2121729, 3536215, 4243458, 7072430, 10608645, 21217290]

約数ペア:

[(1, 21217290), (2, 10608645), (3, 7072430), (5, 4243458), (6, 3536215), (10, 2121729), (15, 1414486), (30, 707243), (83, 255630), (166, 127815), (249, 85210), (415, 51126), (498, 42605), (830, 25563), (1245, 17042), (2490, 8521)]