28735740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:680

約数の個数: 144

約数和(自身を含む): 99380736

約数和(自身を除く): 70644996

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 23, 30, 33, 36, 44, 45, 46, 55, 60, 66, 69, 90, 92, 99, 110, 115, 132, 138, 165, 180, 198, 207, 220, 230, 253, 276, 330, 345, 396, 414, 460, 495, 506, 631, 660, 690, 759, 828, 990, 1012, 1035, 1262, 1265, 1380, 1518, 1893, 1980, 2070, 2277, 2524, 2530, 3036, 3155, 3786, 3795, 4140, 4554, 5060, 5679, 6310, 6941, 7572, 7590, 9108, 9465, 11358, 11385, 12620, 13882, 14513, 15180, 18930, 20823, 22716, 22770, 27764, 28395, 29026, 34705, 37860, 41646, 43539, 45540, 56790, 58052, 62469, 69410, 72565, 83292, 87078, 104115, 113580, 124938, 130617, 138820, 145130, 159643, 174156, 208230, 217695, 249876, 261234, 290260, 312345, 319286, 416460, 435390, 478929, 522468, 624690, 638572, 653085, 798215, 870780, 957858, 1249380, 1306170, 1436787, 1596430, 1915716, 2394645, 2612340, 2873574, 3192860, 4789290, 5747148, 7183935, 9578580, 14367870, 28735740]

約数ペア:

[(1, 28735740), (2, 14367870), (3, 9578580), (4, 7183935), (5, 5747148), (6, 4789290), (9, 3192860), (10, 2873574), (11, 2612340), (12, 2394645), (15, 1915716), (18, 1596430), (20, 1436787), (22, 1306170), (23, 1249380), (30, 957858), (33, 870780), (36, 798215), (44, 653085), (45, 638572), (46, 624690), (55, 522468), (60, 478929), (66, 435390), (69, 416460), (90, 319286), (92, 312345), (99, 290260), (110, 261234), (115, 249876), (132, 217695), (138, 208230), (165, 174156), (180, 159643), (198, 145130), (207, 138820), (220, 130617), (230, 124938), (253, 113580), (276, 104115), (330, 87078), (345, 83292), (396, 72565), (414, 69410), (460, 62469), (495, 58052), (506, 56790), (631, 45540), (660, 43539), (690, 41646), (759, 37860), (828, 34705), (990, 29026), (1012, 28395), (1035, 27764), (1262, 22770), (1265, 22716), (1380, 20823), (1518, 18930), (1893, 15180), (1980, 14513), (2070, 13882), (2277, 12620), (2524, 11385), (2530, 11358), (3036, 9465), (3155, 9108), (3786, 7590), (3795, 7572), (4140, 6941), (4554, 6310), (5060, 5679)]