18072940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 40098240

約数和(自身を除く): 22025300

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 101, 115, 202, 230, 389, 404, 460, 505, 778, 1010, 1556, 1945, 2020, 2323, 3890, 4646, 7780, 8947, 9292, 11615, 17894, 23230, 35788, 39289, 44735, 46460, 78578, 89470, 157156, 178940, 196445, 392890, 785780, 903647, 1807294, 3614588, 4518235, 9036470, 18072940]

約数ペア:

[(1, 18072940), (2, 9036470), (4, 4518235), (5, 3614588), (10, 1807294), (20, 903647), (23, 785780), (46, 392890), (92, 196445), (101, 178940), (115, 157156), (202, 89470), (230, 78578), (389, 46460), (404, 44735), (460, 39289), (505, 35788), (778, 23230), (1010, 17894), (1556, 11615), (1945, 9292), (2020, 8947), (2323, 7780), (3890, 4646)]