17620220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 39463200

約数和(自身を除く): 21842980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 521, 890, 1042, 1691, 1780, 2084, 2605, 3382, 5210, 6764, 8455, 9899, 10420, 16910, 19798, 33820, 39596, 46369, 49495, 92738, 98990, 185476, 197980, 231845, 463690, 881011, 927380, 1762022, 3524044, 4405055, 8810110, 17620220]

約数ペア:

[(1, 17620220), (2, 8810110), (4, 4405055), (5, 3524044), (10, 1762022), (19, 927380), (20, 881011), (38, 463690), (76, 231845), (89, 197980), (95, 185476), (178, 98990), (190, 92738), (356, 49495), (380, 46369), (445, 39596), (521, 33820), (890, 19798), (1042, 16910), (1691, 10420), (1780, 9899), (2084, 8455), (2605, 6764), (3382, 5210)]