19985200

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2939}}^1$

素因数の和:2974

約数の個数: 60

約数和(自身を含む): 50856120

約数和(自身を除く): 30870920

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 2939, 3400, 5878, 6800, 11756, 14695, 23512, 29390, 47024, 49963, 58780, 73475, 99926, 117560, 146950, 199852, 235120, 249815, 293900, 399704, 499630, 587800, 799408, 999260, 1175600, 1249075, 1998520, 2498150, 3997040, 4996300, 9992600, 19985200]

約数ペア:

[(1, 19985200), (2, 9992600), (4, 4996300), (5, 3997040), (8, 2498150), (10, 1998520), (16, 1249075), (17, 1175600), (20, 999260), (25, 799408), (34, 587800), (40, 499630), (50, 399704), (68, 293900), (80, 249815), (85, 235120), (100, 199852), (136, 146950), (170, 117560), (200, 99926), (272, 73475), (340, 58780), (400, 49963), (425, 47024), (680, 29390), (850, 23512), (1360, 14695), (1700, 11756), (2939, 6800), (3400, 5878)]