21832840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7477}}^1$

素因数の和:7561

約数の個数: 32

約数和(自身を含む): 49803480

約数和(自身を除く): 27970640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7477, 14954, 29908, 37385, 59816, 74770, 149540, 299080, 545821, 1091642, 2183284, 2729105, 4366568, 5458210, 10916420, 21832840]

約数ペア:

[(1, 21832840), (2, 10916420), (4, 5458210), (5, 4366568), (8, 2729105), (10, 2183284), (20, 1091642), (40, 545821), (73, 299080), (146, 149540), (292, 74770), (365, 59816), (584, 37385), (730, 29908), (1460, 14954), (2920, 7477)]