28178220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2917}}^1$

素因数の和:2959

約数の個数: 96

約数和(自身を含む): 94123008

約数和(自身を除く): 65944788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 276, 322, 345, 420, 460, 483, 644, 690, 805, 966, 1380, 1610, 1932, 2415, 2917, 3220, 4830, 5834, 8751, 9660, 11668, 14585, 17502, 20419, 29170, 35004, 40838, 43755, 58340, 61257, 67091, 81676, 87510, 102095, 122514, 134182, 175020, 201273, 204190, 245028, 268364, 306285, 335455, 402546, 408380, 469637, 612570, 670910, 805092, 939274, 1006365, 1225140, 1341820, 1408911, 1878548, 2012730, 2348185, 2817822, 4025460, 4696370, 5635644, 7044555, 9392740, 14089110, 28178220]

約数ペア:

[(1, 28178220), (2, 14089110), (3, 9392740), (4, 7044555), (5, 5635644), (6, 4696370), (7, 4025460), (10, 2817822), (12, 2348185), (14, 2012730), (15, 1878548), (20, 1408911), (21, 1341820), (23, 1225140), (28, 1006365), (30, 939274), (35, 805092), (42, 670910), (46, 612570), (60, 469637), (69, 408380), (70, 402546), (84, 335455), (92, 306285), (105, 268364), (115, 245028), (138, 204190), (140, 201273), (161, 175020), (210, 134182), (230, 122514), (276, 102095), (322, 87510), (345, 81676), (420, 67091), (460, 61257), (483, 58340), (644, 43755), (690, 40838), (805, 35004), (966, 29170), (1380, 20419), (1610, 17502), (1932, 14585), (2415, 11668), (2917, 9660), (3220, 8751), (4830, 5834)]