16681240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{467}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 23753960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 467, 470, 760, 893, 934, 940, 1786, 1868, 1880, 2335, 3572, 3736, 4465, 4670, 7144, 8873, 8930, 9340, 17746, 17860, 18680, 21949, 35492, 35720, 43898, 44365, 70984, 87796, 88730, 109745, 175592, 177460, 219490, 354920, 417031, 438980, 834062, 877960, 1668124, 2085155, 3336248, 4170310, 8340620, 16681240]

約数ペア:

[(1, 16681240), (2, 8340620), (4, 4170310), (5, 3336248), (8, 2085155), (10, 1668124), (19, 877960), (20, 834062), (38, 438980), (40, 417031), (47, 354920), (76, 219490), (94, 177460), (95, 175592), (152, 109745), (188, 88730), (190, 87796), (235, 70984), (376, 44365), (380, 43898), (467, 35720), (470, 35492), (760, 21949), (893, 18680), (934, 17860), (940, 17746), (1786, 9340), (1868, 8930), (1880, 8873), (2335, 7144), (3572, 4670), (3736, 4465)]