28147240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 75582720

約数和(自身を除く): 47435480

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 53, 55, 68, 71, 85, 88, 106, 110, 136, 142, 170, 187, 212, 220, 265, 284, 340, 355, 374, 424, 440, 530, 568, 583, 680, 710, 748, 781, 901, 935, 1060, 1166, 1207, 1420, 1496, 1562, 1802, 1870, 2120, 2332, 2414, 2840, 2915, 3124, 3604, 3740, 3763, 3905, 4505, 4664, 4828, 5830, 6035, 6248, 7208, 7480, 7526, 7810, 9010, 9656, 9911, 11660, 12070, 13277, 15052, 15620, 18020, 18815, 19822, 23320, 24140, 26554, 30104, 31240, 36040, 37630, 39644, 41393, 48280, 49555, 53108, 63971, 66385, 75260, 79288, 82786, 99110, 106216, 127942, 132770, 150520, 165572, 198220, 206965, 255884, 265540, 319855, 331144, 396440, 413930, 511768, 531080, 639710, 703681, 827860, 1279420, 1407362, 1655720, 2558840, 2814724, 3518405, 5629448, 7036810, 14073620, 28147240]

約数ペア:

[(1, 28147240), (2, 14073620), (4, 7036810), (5, 5629448), (8, 3518405), (10, 2814724), (11, 2558840), (17, 1655720), (20, 1407362), (22, 1279420), (34, 827860), (40, 703681), (44, 639710), (53, 531080), (55, 511768), (68, 413930), (71, 396440), (85, 331144), (88, 319855), (106, 265540), (110, 255884), (136, 206965), (142, 198220), (170, 165572), (187, 150520), (212, 132770), (220, 127942), (265, 106216), (284, 99110), (340, 82786), (355, 79288), (374, 75260), (424, 66385), (440, 63971), (530, 53108), (568, 49555), (583, 48280), (680, 41393), (710, 39644), (748, 37630), (781, 36040), (901, 31240), (935, 30104), (1060, 26554), (1166, 24140), (1207, 23320), (1420, 19822), (1496, 18815), (1562, 18020), (1802, 15620), (1870, 15052), (2120, 13277), (2332, 12070), (2414, 11660), (2840, 9911), (2915, 9656), (3124, 9010), (3604, 7810), (3740, 7526), (3763, 7480), (3905, 7208), (4505, 6248), (4664, 6035), (4828, 5830)]