28765880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 78382080

約数和(自身を除く): 49616200

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 47, 52, 55, 65, 88, 94, 104, 107, 110, 130, 143, 188, 214, 220, 235, 260, 286, 376, 428, 440, 470, 517, 520, 535, 572, 611, 715, 856, 940, 1034, 1070, 1144, 1177, 1222, 1391, 1430, 1880, 2068, 2140, 2354, 2444, 2585, 2782, 2860, 3055, 4136, 4280, 4708, 4888, 5029, 5170, 5564, 5720, 5885, 6110, 6721, 6955, 9416, 10058, 10340, 11128, 11770, 12220, 13442, 13910, 15301, 20116, 20680, 23540, 24440, 25145, 26884, 27820, 30602, 33605, 40232, 47080, 50290, 53768, 55319, 55640, 61204, 65377, 67210, 76505, 100580, 110638, 122408, 130754, 134420, 153010, 201160, 221276, 261508, 268840, 276595, 306020, 326885, 442552, 523016, 553190, 612040, 653770, 719147, 1106380, 1307540, 1438294, 2212760, 2615080, 2876588, 3595735, 5753176, 7191470, 14382940, 28765880]

約数ペア:

[(1, 28765880), (2, 14382940), (4, 7191470), (5, 5753176), (8, 3595735), (10, 2876588), (11, 2615080), (13, 2212760), (20, 1438294), (22, 1307540), (26, 1106380), (40, 719147), (44, 653770), (47, 612040), (52, 553190), (55, 523016), (65, 442552), (88, 326885), (94, 306020), (104, 276595), (107, 268840), (110, 261508), (130, 221276), (143, 201160), (188, 153010), (214, 134420), (220, 130754), (235, 122408), (260, 110638), (286, 100580), (376, 76505), (428, 67210), (440, 65377), (470, 61204), (517, 55640), (520, 55319), (535, 53768), (572, 50290), (611, 47080), (715, 40232), (856, 33605), (940, 30602), (1034, 27820), (1070, 26884), (1144, 25145), (1177, 24440), (1222, 23540), (1391, 20680), (1430, 20116), (1880, 15301), (2068, 13910), (2140, 13442), (2354, 12220), (2444, 11770), (2585, 11128), (2782, 10340), (2860, 10058), (3055, 9416), (4136, 6955), (4280, 6721), (4708, 6110), (4888, 5885), (5029, 5720), (5170, 5564)]