28041720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:298

約数の個数: 192

約数和(自身を含む): 103420800

約数和(自身を除く): 75379080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 49, 56, 57, 60, 70, 76, 84, 95, 98, 105, 114, 120, 133, 140, 147, 152, 168, 190, 196, 210, 228, 245, 251, 266, 280, 285, 294, 380, 392, 399, 420, 456, 490, 502, 532, 570, 588, 665, 735, 753, 760, 798, 840, 931, 980, 1004, 1064, 1140, 1176, 1255, 1330, 1470, 1506, 1596, 1757, 1862, 1960, 1995, 2008, 2280, 2510, 2660, 2793, 2940, 3012, 3192, 3514, 3724, 3765, 3990, 4655, 4769, 5020, 5271, 5320, 5586, 5880, 6024, 7028, 7448, 7530, 7980, 8785, 9310, 9538, 10040, 10542, 11172, 12299, 13965, 14056, 14307, 15060, 15960, 17570, 18620, 19076, 21084, 22344, 23845, 24598, 26355, 27930, 28614, 30120, 33383, 35140, 36897, 37240, 38152, 42168, 47690, 49196, 52710, 55860, 57228, 61495, 66766, 70280, 71535, 73794, 95380, 98392, 100149, 105420, 111720, 114456, 122990, 133532, 143070, 147588, 166915, 184485, 190760, 200298, 210840, 233681, 245980, 267064, 286140, 295176, 333830, 368970, 400596, 467362, 491960, 500745, 572280, 667660, 701043, 737940, 801192, 934724, 1001490, 1168405, 1335320, 1402086, 1475880, 1869448, 2002980, 2336810, 2804172, 3505215, 4005960, 4673620, 5608344, 7010430, 9347240, 14020860, 28041720]

約数ペア:

[(1, 28041720), (2, 14020860), (3, 9347240), (4, 7010430), (5, 5608344), (6, 4673620), (7, 4005960), (8, 3505215), (10, 2804172), (12, 2336810), (14, 2002980), (15, 1869448), (19, 1475880), (20, 1402086), (21, 1335320), (24, 1168405), (28, 1001490), (30, 934724), (35, 801192), (38, 737940), (40, 701043), (42, 667660), (49, 572280), (56, 500745), (57, 491960), (60, 467362), (70, 400596), (76, 368970), (84, 333830), (95, 295176), (98, 286140), (105, 267064), (114, 245980), (120, 233681), (133, 210840), (140, 200298), (147, 190760), (152, 184485), (168, 166915), (190, 147588), (196, 143070), (210, 133532), (228, 122990), (245, 114456), (251, 111720), (266, 105420), (280, 100149), (285, 98392), (294, 95380), (380, 73794), (392, 71535), (399, 70280), (420, 66766), (456, 61495), (490, 57228), (502, 55860), (532, 52710), (570, 49196), (588, 47690), (665, 42168), (735, 38152), (753, 37240), (760, 36897), (798, 35140), (840, 33383), (931, 30120), (980, 28614), (1004, 27930), (1064, 26355), (1140, 24598), (1176, 23845), (1255, 22344), (1330, 21084), (1470, 19076), (1506, 18620), (1596, 17570), (1757, 15960), (1862, 15060), (1960, 14307), (1995, 14056), (2008, 13965), (2280, 12299), (2510, 11172), (2660, 10542), (2793, 10040), (2940, 9538), (3012, 9310), (3192, 8785), (3514, 7980), (3724, 7530), (3765, 7448), (3990, 7028), (4655, 6024), (4769, 5880), (5020, 5586), (5271, 5320)]