28013640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:207

約数の個数: 128

約数和(自身を含む): 88387200

約数和(自身を除く): 60373560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 61, 86, 89, 120, 122, 129, 172, 178, 183, 215, 244, 258, 267, 305, 344, 356, 366, 430, 445, 488, 516, 534, 610, 645, 712, 732, 860, 890, 915, 1032, 1068, 1220, 1290, 1335, 1464, 1720, 1780, 1830, 2136, 2440, 2580, 2623, 2670, 3560, 3660, 3827, 5160, 5246, 5340, 5429, 7320, 7654, 7869, 10492, 10680, 10858, 11481, 13115, 15308, 15738, 16287, 19135, 20984, 21716, 22962, 26230, 27145, 30616, 31476, 32574, 38270, 39345, 43432, 45924, 52460, 54290, 57405, 62952, 65148, 76540, 78690, 81435, 91848, 104920, 108580, 114810, 130296, 153080, 157380, 162870, 217160, 229620, 233447, 314760, 325740, 459240, 466894, 651480, 700341, 933788, 1167235, 1400682, 1867576, 2334470, 2801364, 3501705, 4668940, 5602728, 7003410, 9337880, 14006820, 28013640]

約数ペア:

[(1, 28013640), (2, 14006820), (3, 9337880), (4, 7003410), (5, 5602728), (6, 4668940), (8, 3501705), (10, 2801364), (12, 2334470), (15, 1867576), (20, 1400682), (24, 1167235), (30, 933788), (40, 700341), (43, 651480), (60, 466894), (61, 459240), (86, 325740), (89, 314760), (120, 233447), (122, 229620), (129, 217160), (172, 162870), (178, 157380), (183, 153080), (215, 130296), (244, 114810), (258, 108580), (267, 104920), (305, 91848), (344, 81435), (356, 78690), (366, 76540), (430, 65148), (445, 62952), (488, 57405), (516, 54290), (534, 52460), (610, 45924), (645, 43432), (712, 39345), (732, 38270), (860, 32574), (890, 31476), (915, 30616), (1032, 27145), (1068, 26230), (1220, 22962), (1290, 21716), (1335, 20984), (1464, 19135), (1720, 16287), (1780, 15738), (1830, 15308), (2136, 13115), (2440, 11481), (2580, 10858), (2623, 10680), (2670, 10492), (3560, 7869), (3660, 7654), (3827, 7320), (5160, 5429), (5246, 5340)]