20703928

素因数分解:

$2^3\times 7^1\times {\mathrm{457}}^1\times {\mathrm{809}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 44517600

約数和(自身を除く): 23813672

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 457, 809, 914, 1618, 1828, 3199, 3236, 3656, 5663, 6398, 6472, 11326, 12796, 22652, 25592, 45304, 369713, 739426, 1478852, 2587991, 2957704, 5175982, 10351964, 20703928]

約数ペア:

[(1, 20703928), (2, 10351964), (4, 5175982), (7, 2957704), (8, 2587991), (14, 1478852), (28, 739426), (56, 369713), (457, 45304), (809, 25592), (914, 22652), (1618, 12796), (1828, 11326), (3199, 6472), (3236, 6398), (3656, 5663)]