28123040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2$

素因数の和:103

約数の個数: 144

約数和(自身を含む): 79017120

約数和(自身を除く): 50894080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 29, 32, 38, 40, 44, 55, 58, 76, 80, 88, 95, 110, 116, 145, 152, 160, 176, 190, 209, 220, 232, 290, 304, 319, 352, 380, 418, 440, 464, 551, 580, 608, 638, 760, 836, 841, 880, 928, 1045, 1102, 1160, 1276, 1520, 1595, 1672, 1682, 1760, 2090, 2204, 2320, 2552, 2755, 3040, 3190, 3344, 3364, 4180, 4205, 4408, 4640, 5104, 5510, 6061, 6380, 6688, 6728, 8360, 8410, 8816, 9251, 10208, 11020, 12122, 12760, 13456, 15979, 16720, 16820, 17632, 18502, 22040, 24244, 25520, 26912, 30305, 31958, 33440, 33640, 37004, 44080, 46255, 48488, 51040, 60610, 63916, 67280, 74008, 79895, 88160, 92510, 96976, 121220, 127832, 134560, 148016, 159790, 175769, 185020, 193952, 242440, 255664, 296032, 319580, 351538, 370040, 484880, 511328, 639160, 703076, 740080, 878845, 969760, 1278320, 1406152, 1480160, 1757690, 2556640, 2812304, 3515380, 5624608, 7030760, 14061520, 28123040]

約数ペア:

[(1, 28123040), (2, 14061520), (4, 7030760), (5, 5624608), (8, 3515380), (10, 2812304), (11, 2556640), (16, 1757690), (19, 1480160), (20, 1406152), (22, 1278320), (29, 969760), (32, 878845), (38, 740080), (40, 703076), (44, 639160), (55, 511328), (58, 484880), (76, 370040), (80, 351538), (88, 319580), (95, 296032), (110, 255664), (116, 242440), (145, 193952), (152, 185020), (160, 175769), (176, 159790), (190, 148016), (209, 134560), (220, 127832), (232, 121220), (290, 96976), (304, 92510), (319, 88160), (352, 79895), (380, 74008), (418, 67280), (440, 63916), (464, 60610), (551, 51040), (580, 48488), (608, 46255), (638, 44080), (760, 37004), (836, 33640), (841, 33440), (880, 31958), (928, 30305), (1045, 26912), (1102, 25520), (1160, 24244), (1276, 22040), (1520, 18502), (1595, 17632), (1672, 16820), (1682, 16720), (1760, 15979), (2090, 13456), (2204, 12760), (2320, 12122), (2552, 11020), (2755, 10208), (3040, 9251), (3190, 8816), (3344, 8410), (3364, 8360), (4180, 6728), (4205, 6688), (4408, 6380), (4640, 6061), (5104, 5510)]