28103680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:535

約数の個数: 88

約数和(自身を含む): 73692000

約数和(自身を除く): 45588320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 499, 512, 640, 704, 880, 998, 1024, 1280, 1408, 1760, 1996, 2495, 2560, 2816, 3520, 3992, 4990, 5120, 5489, 5632, 7040, 7984, 9980, 10978, 11264, 14080, 15968, 19960, 21956, 27445, 28160, 31936, 39920, 43912, 54890, 56320, 63872, 79840, 87824, 109780, 127744, 159680, 175648, 219560, 255488, 319360, 351296, 439120, 510976, 638720, 702592, 878240, 1277440, 1405184, 1756480, 2554880, 2810368, 3512960, 5620736, 7025920, 14051840, 28103680]

約数ペア:

[(1, 28103680), (2, 14051840), (4, 7025920), (5, 5620736), (8, 3512960), (10, 2810368), (11, 2554880), (16, 1756480), (20, 1405184), (22, 1277440), (32, 878240), (40, 702592), (44, 638720), (55, 510976), (64, 439120), (80, 351296), (88, 319360), (110, 255488), (128, 219560), (160, 175648), (176, 159680), (220, 127744), (256, 109780), (320, 87824), (352, 79840), (440, 63872), (499, 56320), (512, 54890), (640, 43912), (704, 39920), (880, 31936), (998, 28160), (1024, 27445), (1280, 21956), (1408, 19960), (1760, 15968), (1996, 14080), (2495, 11264), (2560, 10978), (2816, 9980), (3520, 7984), (3992, 7040), (4990, 5632), (5120, 5489)]