39180400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{1999}}^1$

素因数の和:2031

約数の個数: 90

約数和(自身を含む): 109554000

約数和(自身を除く): 70373600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 1999, 2450, 2800, 3920, 3998, 4900, 7996, 9800, 9995, 13993, 15992, 19600, 19990, 27986, 31984, 39980, 49975, 55972, 69965, 79960, 97951, 99950, 111944, 139930, 159920, 195902, 199900, 223888, 279860, 349825, 391804, 399800, 489755, 559720, 699650, 783608, 799600, 979510, 1119440, 1399300, 1567216, 1959020, 2448775, 2798600, 3918040, 4897550, 5597200, 7836080, 9795100, 19590200, 39180400]

約数ペア:

[(1, 39180400), (2, 19590200), (4, 9795100), (5, 7836080), (7, 5597200), (8, 4897550), (10, 3918040), (14, 2798600), (16, 2448775), (20, 1959020), (25, 1567216), (28, 1399300), (35, 1119440), (40, 979510), (49, 799600), (50, 783608), (56, 699650), (70, 559720), (80, 489755), (98, 399800), (100, 391804), (112, 349825), (140, 279860), (175, 223888), (196, 199900), (200, 195902), (245, 159920), (280, 139930), (350, 111944), (392, 99950), (400, 97951), (490, 79960), (560, 69965), (700, 55972), (784, 49975), (980, 39980), (1225, 31984), (1400, 27986), (1960, 19990), (1999, 19600), (2450, 15992), (2800, 13993), (3920, 9995), (3998, 9800), (4900, 7996)]