18902800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 120

約数和(自身を含む): 53446976

約数和(自身を除く): 34544176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 43, 50, 56, 70, 80, 86, 100, 112, 140, 157, 172, 175, 200, 215, 280, 301, 314, 344, 350, 400, 430, 560, 602, 628, 688, 700, 785, 860, 1075, 1099, 1204, 1256, 1400, 1505, 1570, 1720, 2150, 2198, 2408, 2512, 2800, 3010, 3140, 3440, 3925, 4300, 4396, 4816, 5495, 6020, 6280, 6751, 7525, 7850, 8600, 8792, 10990, 12040, 12560, 13502, 15050, 15700, 17200, 17584, 21980, 24080, 27004, 27475, 30100, 31400, 33755, 43960, 47257, 54008, 54950, 60200, 62800, 67510, 87920, 94514, 108016, 109900, 120400, 135020, 168775, 189028, 219800, 236285, 270040, 337550, 378056, 439600, 472570, 540080, 675100, 756112, 945140, 1181425, 1350200, 1890280, 2362850, 2700400, 3780560, 4725700, 9451400, 18902800]

約数ペア:

[(1, 18902800), (2, 9451400), (4, 4725700), (5, 3780560), (7, 2700400), (8, 2362850), (10, 1890280), (14, 1350200), (16, 1181425), (20, 945140), (25, 756112), (28, 675100), (35, 540080), (40, 472570), (43, 439600), (50, 378056), (56, 337550), (70, 270040), (80, 236285), (86, 219800), (100, 189028), (112, 168775), (140, 135020), (157, 120400), (172, 109900), (175, 108016), (200, 94514), (215, 87920), (280, 67510), (301, 62800), (314, 60200), (344, 54950), (350, 54008), (400, 47257), (430, 43960), (560, 33755), (602, 31400), (628, 30100), (688, 27475), (700, 27004), (785, 24080), (860, 21980), (1075, 17584), (1099, 17200), (1204, 15700), (1256, 15050), (1400, 13502), (1505, 12560), (1570, 12040), (1720, 10990), (2150, 8792), (2198, 8600), (2408, 7850), (2512, 7525), (2800, 6751), (3010, 6280), (3140, 6020), (3440, 5495), (3925, 4816), (4300, 4396)]