28804440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:721

約数の個数: 128

約数和(自身を含む): 100776960

約数和(自身を除く): 71972520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 53, 56, 60, 70, 84, 105, 106, 120, 140, 159, 168, 210, 212, 265, 280, 318, 371, 420, 424, 530, 636, 647, 742, 795, 840, 1060, 1113, 1272, 1294, 1484, 1590, 1855, 1941, 2120, 2226, 2588, 2968, 3180, 3235, 3710, 3882, 4452, 4529, 5176, 5565, 6360, 6470, 7420, 7764, 8904, 9058, 9705, 11130, 12940, 13587, 14840, 15528, 18116, 19410, 22260, 22645, 25880, 27174, 34291, 36232, 38820, 44520, 45290, 54348, 67935, 68582, 77640, 90580, 102873, 108696, 135870, 137164, 171455, 181160, 205746, 240037, 271740, 274328, 342910, 411492, 480074, 514365, 543480, 685820, 720111, 822984, 960148, 1028730, 1200185, 1371640, 1440222, 1920296, 2057460, 2400370, 2880444, 3600555, 4114920, 4800740, 5760888, 7201110, 9601480, 14402220, 28804440]

約数ペア:

[(1, 28804440), (2, 14402220), (3, 9601480), (4, 7201110), (5, 5760888), (6, 4800740), (7, 4114920), (8, 3600555), (10, 2880444), (12, 2400370), (14, 2057460), (15, 1920296), (20, 1440222), (21, 1371640), (24, 1200185), (28, 1028730), (30, 960148), (35, 822984), (40, 720111), (42, 685820), (53, 543480), (56, 514365), (60, 480074), (70, 411492), (84, 342910), (105, 274328), (106, 271740), (120, 240037), (140, 205746), (159, 181160), (168, 171455), (210, 137164), (212, 135870), (265, 108696), (280, 102873), (318, 90580), (371, 77640), (420, 68582), (424, 67935), (530, 54348), (636, 45290), (647, 44520), (742, 38820), (795, 36232), (840, 34291), (1060, 27174), (1113, 25880), (1272, 22645), (1294, 22260), (1484, 19410), (1590, 18116), (1855, 15528), (1941, 14840), (2120, 13587), (2226, 12940), (2588, 11130), (2968, 9705), (3180, 9058), (3235, 8904), (3710, 7764), (3882, 7420), (4452, 6470), (4529, 6360), (5176, 5565)]