28408240

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{7247}}^1$

素因数の和:7274

約数の個数: 60

約数和(自身を含む): 76843296

約数和(自身を除く): 48435056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 7247, 14494, 28988, 36235, 50729, 57976, 72470, 101458, 115952, 144940, 202916, 253645, 289880, 355103, 405832, 507290, 579760, 710206, 811664, 1014580, 1420412, 1775515, 2029160, 2840824, 3551030, 4058320, 5681648, 7102060, 14204120, 28408240]

約数ペア:

[(1, 28408240), (2, 14204120), (4, 7102060), (5, 5681648), (7, 4058320), (8, 3551030), (10, 2840824), (14, 2029160), (16, 1775515), (20, 1420412), (28, 1014580), (35, 811664), (40, 710206), (49, 579760), (56, 507290), (70, 405832), (80, 355103), (98, 289880), (112, 253645), (140, 202916), (196, 144940), (245, 115952), (280, 101458), (392, 72470), (490, 57976), (560, 50729), (784, 36235), (980, 28988), (1960, 14494), (3920, 7247)]