12887200

素因数分解:

$2^5\times 5^2\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:290

約数の個数: 72

約数和(自身を含む): 31990140

約数和(自身を除く): 19102940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 89, 100, 160, 178, 181, 200, 356, 362, 400, 445, 712, 724, 800, 890, 905, 1424, 1448, 1780, 1810, 2225, 2848, 2896, 3560, 3620, 4450, 4525, 5792, 7120, 7240, 8900, 9050, 14240, 14480, 16109, 17800, 18100, 28960, 32218, 35600, 36200, 64436, 71200, 72400, 80545, 128872, 144800, 161090, 257744, 322180, 402725, 515488, 644360, 805450, 1288720, 1610900, 2577440, 3221800, 6443600, 12887200]

約数ペア:

[(1, 12887200), (2, 6443600), (4, 3221800), (5, 2577440), (8, 1610900), (10, 1288720), (16, 805450), (20, 644360), (25, 515488), (32, 402725), (40, 322180), (50, 257744), (80, 161090), (89, 144800), (100, 128872), (160, 80545), (178, 72400), (181, 71200), (200, 64436), (356, 36200), (362, 35600), (400, 32218), (445, 28960), (712, 18100), (724, 17800), (800, 16109), (890, 14480), (905, 14240), (1424, 9050), (1448, 8900), (1780, 7240), (1810, 7120), (2225, 5792), (2848, 4525), (2896, 4450), (3560, 3620)]