28775120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1721}}^1$

素因数の和:1764

約数の個数: 80

約数和(自身を含む): 76870080

約数和(自身を除く): 48094960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 1721, 2090, 3344, 3442, 4180, 6884, 8360, 8605, 13768, 16720, 17210, 18931, 27536, 32699, 34420, 37862, 65398, 68840, 75724, 94655, 130796, 137680, 151448, 163495, 189310, 261592, 302896, 326990, 359689, 378620, 523184, 653980, 719378, 757240, 1307960, 1438756, 1514480, 1798445, 2615920, 2877512, 3596890, 5755024, 7193780, 14387560, 28775120]

約数ペア:

[(1, 28775120), (2, 14387560), (4, 7193780), (5, 5755024), (8, 3596890), (10, 2877512), (11, 2615920), (16, 1798445), (19, 1514480), (20, 1438756), (22, 1307960), (38, 757240), (40, 719378), (44, 653980), (55, 523184), (76, 378620), (80, 359689), (88, 326990), (95, 302896), (110, 261592), (152, 189310), (176, 163495), (190, 151448), (209, 137680), (220, 130796), (304, 94655), (380, 75724), (418, 68840), (440, 65398), (760, 37862), (836, 34420), (880, 32699), (1045, 27536), (1520, 18931), (1672, 17210), (1721, 16720), (2090, 13768), (3344, 8605), (3442, 8360), (4180, 6884)]