15181720

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{773}}^1$

素因数の和:1275

約数の個数: 32

約数和(自身を含む): 34272720

約数和(自身を除く): 19091000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 773, 982, 1546, 1964, 2455, 3092, 3865, 3928, 4910, 6184, 7730, 9820, 15460, 19640, 30920, 379543, 759086, 1518172, 1897715, 3036344, 3795430, 7590860, 15181720]

約数ペア:

[(1, 15181720), (2, 7590860), (4, 3795430), (5, 3036344), (8, 1897715), (10, 1518172), (20, 759086), (40, 379543), (491, 30920), (773, 19640), (982, 15460), (1546, 9820), (1964, 7730), (2455, 6184), (3092, 4910), (3865, 3928)]