19590200

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{1999}}^1$

素因数の和:2029

約数の個数: 72

約数和(自身を含む): 53010000

約数和(自身を除く): 33419800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 1999, 2450, 3998, 4900, 7996, 9800, 9995, 13993, 15992, 19990, 27986, 39980, 49975, 55972, 69965, 79960, 97951, 99950, 111944, 139930, 195902, 199900, 279860, 349825, 391804, 399800, 489755, 559720, 699650, 783608, 979510, 1399300, 1959020, 2448775, 2798600, 3918040, 4897550, 9795100, 19590200]

約数ペア:

[(1, 19590200), (2, 9795100), (4, 4897550), (5, 3918040), (7, 2798600), (8, 2448775), (10, 1959020), (14, 1399300), (20, 979510), (25, 783608), (28, 699650), (35, 559720), (40, 489755), (49, 399800), (50, 391804), (56, 349825), (70, 279860), (98, 199900), (100, 195902), (140, 139930), (175, 111944), (196, 99950), (200, 97951), (245, 79960), (280, 69965), (350, 55972), (392, 49975), (490, 39980), (700, 27986), (980, 19990), (1225, 15992), (1400, 13993), (1960, 9995), (1999, 9800), (2450, 7996), (3998, 4900)]