16257420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{499}}^1$

素因数の和:695

約数の個数: 72

約数和(自身を含む): 49686000

約数和(自身を除く): 33428580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 181, 362, 499, 543, 724, 905, 998, 1086, 1497, 1629, 1810, 1996, 2172, 2495, 2715, 2994, 3258, 3620, 4491, 4990, 5430, 5988, 6516, 7485, 8145, 8982, 9980, 10860, 14970, 16290, 17964, 22455, 29940, 32580, 44910, 89820, 90319, 180638, 270957, 361276, 451595, 541914, 812871, 903190, 1083828, 1354785, 1625742, 1806380, 2709570, 3251484, 4064355, 5419140, 8128710, 16257420]

約数ペア:

[(1, 16257420), (2, 8128710), (3, 5419140), (4, 4064355), (5, 3251484), (6, 2709570), (9, 1806380), (10, 1625742), (12, 1354785), (15, 1083828), (18, 903190), (20, 812871), (30, 541914), (36, 451595), (45, 361276), (60, 270957), (90, 180638), (180, 90319), (181, 89820), (362, 44910), (499, 32580), (543, 29940), (724, 22455), (905, 17964), (998, 16290), (1086, 14970), (1497, 10860), (1629, 9980), (1810, 8982), (1996, 8145), (2172, 7485), (2495, 6516), (2715, 5988), (2994, 5430), (3258, 4990), (3620, 4491)]