19990600

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 54014400

約数和(自身を除く): 34023800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 100, 109, 131, 140, 175, 200, 218, 262, 280, 350, 436, 524, 545, 655, 700, 763, 872, 917, 1048, 1090, 1310, 1400, 1526, 1834, 2180, 2620, 2725, 3052, 3275, 3668, 3815, 4360, 4585, 5240, 5450, 6104, 6550, 7336, 7630, 9170, 10900, 13100, 14279, 15260, 18340, 19075, 21800, 22925, 26200, 28558, 30520, 36680, 38150, 45850, 57116, 71395, 76300, 91700, 99953, 114232, 142790, 152600, 183400, 199906, 285580, 356975, 399812, 499765, 571160, 713950, 799624, 999530, 1427900, 1999060, 2498825, 2855800, 3998120, 4997650, 9995300, 19990600]

約数ペア:

[(1, 19990600), (2, 9995300), (4, 4997650), (5, 3998120), (7, 2855800), (8, 2498825), (10, 1999060), (14, 1427900), (20, 999530), (25, 799624), (28, 713950), (35, 571160), (40, 499765), (50, 399812), (56, 356975), (70, 285580), (100, 199906), (109, 183400), (131, 152600), (140, 142790), (175, 114232), (200, 99953), (218, 91700), (262, 76300), (280, 71395), (350, 57116), (436, 45850), (524, 38150), (545, 36680), (655, 30520), (700, 28558), (763, 26200), (872, 22925), (917, 21800), (1048, 19075), (1090, 18340), (1310, 15260), (1400, 14279), (1526, 13100), (1834, 10900), (2180, 9170), (2620, 7630), (2725, 7336), (3052, 6550), (3275, 6104), (3668, 5450), (3815, 5240), (4360, 4585)]