421400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{43}}^1$

素因数の和:73

約数の個数: 72

約数和(自身を含む): 1166220

約数和(自身を除く): 744820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 43, 49, 50, 56, 70, 86, 98, 100, 140, 172, 175, 196, 200, 215, 245, 280, 301, 344, 350, 392, 430, 490, 602, 700, 860, 980, 1075, 1204, 1225, 1400, 1505, 1720, 1960, 2107, 2150, 2408, 2450, 3010, 4214, 4300, 4900, 6020, 7525, 8428, 8600, 9800, 10535, 12040, 15050, 16856, 21070, 30100, 42140, 52675, 60200, 84280, 105350, 210700, 421400]

約数ペア:

[(1, 421400), (2, 210700), (4, 105350), (5, 84280), (7, 60200), (8, 52675), (10, 42140), (14, 30100), (20, 21070), (25, 16856), (28, 15050), (35, 12040), (40, 10535), (43, 9800), (49, 8600), (50, 8428), (56, 7525), (70, 6020), (86, 4900), (98, 4300), (100, 4214), (140, 3010), (172, 2450), (175, 2408), (196, 2150), (200, 2107), (215, 1960), (245, 1720), (280, 1505), (301, 1400), (344, 1225), (350, 1204), (392, 1075), (430, 980), (490, 860), (602, 700)]