16244840

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4021}}^1$

素因数の和:4133

約数の個数: 32

約数和(自身を含む): 36921960

約数和(自身を除く): 20677120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4021, 4040, 8042, 16084, 20105, 32168, 40210, 80420, 160840, 406121, 812242, 1624484, 2030605, 3248968, 4061210, 8122420, 16244840]

約数ペア:

[(1, 16244840), (2, 8122420), (4, 4061210), (5, 3248968), (8, 2030605), (10, 1624484), (20, 812242), (40, 406121), (101, 160840), (202, 80420), (404, 40210), (505, 32168), (808, 20105), (1010, 16084), (2020, 8042), (4021, 4040)]