90210400

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:297

約数の個数: 144

約数和(自身を含む): 255921120

約数和(自身を除く): 165710720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 89, 100, 112, 140, 160, 175, 178, 181, 200, 224, 280, 350, 356, 362, 400, 445, 560, 623, 700, 712, 724, 800, 890, 905, 1120, 1246, 1267, 1400, 1424, 1448, 1780, 1810, 2225, 2492, 2534, 2800, 2848, 2896, 3115, 3560, 3620, 4450, 4525, 4984, 5068, 5600, 5792, 6230, 6335, 7120, 7240, 8900, 9050, 9968, 10136, 12460, 12670, 14240, 14480, 15575, 16109, 17800, 18100, 19936, 20272, 24920, 25340, 28960, 31150, 31675, 32218, 35600, 36200, 40544, 49840, 50680, 62300, 63350, 64436, 71200, 72400, 80545, 99680, 101360, 112763, 124600, 126700, 128872, 144800, 161090, 202720, 225526, 249200, 253400, 257744, 322180, 402725, 451052, 498400, 506800, 515488, 563815, 644360, 805450, 902104, 1013600, 1127630, 1288720, 1610900, 1804208, 2255260, 2577440, 2819075, 3221800, 3608416, 4510520, 5638150, 6443600, 9021040, 11276300, 12887200, 18042080, 22552600, 45105200, 90210400]

約数ペア:

[(1, 90210400), (2, 45105200), (4, 22552600), (5, 18042080), (7, 12887200), (8, 11276300), (10, 9021040), (14, 6443600), (16, 5638150), (20, 4510520), (25, 3608416), (28, 3221800), (32, 2819075), (35, 2577440), (40, 2255260), (50, 1804208), (56, 1610900), (70, 1288720), (80, 1127630), (89, 1013600), (100, 902104), (112, 805450), (140, 644360), (160, 563815), (175, 515488), (178, 506800), (181, 498400), (200, 451052), (224, 402725), (280, 322180), (350, 257744), (356, 253400), (362, 249200), (400, 225526), (445, 202720), (560, 161090), (623, 144800), (700, 128872), (712, 126700), (724, 124600), (800, 112763), (890, 101360), (905, 99680), (1120, 80545), (1246, 72400), (1267, 71200), (1400, 64436), (1424, 63350), (1448, 62300), (1780, 50680), (1810, 49840), (2225, 40544), (2492, 36200), (2534, 35600), (2800, 32218), (2848, 31675), (2896, 31150), (3115, 28960), (3560, 25340), (3620, 24920), (4450, 20272), (4525, 19936), (4984, 18100), (5068, 17800), (5600, 16109), (5792, 15575), (6230, 14480), (6335, 14240), (7120, 12670), (7240, 12460), (8900, 10136), (9050, 9968)]