28379920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18671}}^1$

素因数の和:18703

約数の個数: 40

約数和(自身を含む): 69459840

約数和(自身を除く): 41079920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18671, 37342, 74684, 93355, 149368, 186710, 298736, 354749, 373420, 709498, 746840, 1418996, 1493680, 1773745, 2837992, 3547490, 5675984, 7094980, 14189960, 28379920]

約数ペア:

[(1, 28379920), (2, 14189960), (4, 7094980), (5, 5675984), (8, 3547490), (10, 2837992), (16, 1773745), (19, 1493680), (20, 1418996), (38, 746840), (40, 709498), (76, 373420), (80, 354749), (95, 298736), (152, 186710), (190, 149368), (304, 93355), (380, 74684), (760, 37342), (1520, 18671)]