28535080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{457}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 73866240

約数和(自身を除く): 45331160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 223, 280, 446, 457, 892, 914, 1115, 1561, 1784, 1828, 2230, 2285, 3122, 3199, 3656, 4460, 4570, 6244, 6398, 7805, 8920, 9140, 12488, 12796, 15610, 15995, 18280, 25592, 31220, 31990, 62440, 63980, 101911, 127960, 203822, 407644, 509555, 713377, 815288, 1019110, 1426754, 2038220, 2853508, 3566885, 4076440, 5707016, 7133770, 14267540, 28535080]

約数ペア:

[(1, 28535080), (2, 14267540), (4, 7133770), (5, 5707016), (7, 4076440), (8, 3566885), (10, 2853508), (14, 2038220), (20, 1426754), (28, 1019110), (35, 815288), (40, 713377), (56, 509555), (70, 407644), (140, 203822), (223, 127960), (280, 101911), (446, 63980), (457, 62440), (892, 31990), (914, 31220), (1115, 25592), (1561, 18280), (1784, 15995), (1828, 15610), (2230, 12796), (2285, 12488), (3122, 9140), (3199, 8920), (3656, 7805), (4460, 6398), (4570, 6244)]