19924380

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{251}}^1$

素因数の和:286

約数の個数: 180

約数和(自身を含む): 72997848

約数和(自身を除く): 53073468

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 245, 251, 252, 270, 294, 315, 324, 378, 405, 420, 441, 490, 502, 540, 567, 588, 630, 735, 753, 756, 810, 882, 945, 980, 1004, 1134, 1255, 1260, 1323, 1470, 1506, 1620, 1757, 1764, 1890, 2205, 2259, 2268, 2510, 2646, 2835, 2940, 3012, 3514, 3765, 3780, 3969, 4410, 4518, 5020, 5271, 5292, 5670, 6615, 6777, 7028, 7530, 7938, 8785, 8820, 9036, 10542, 11295, 11340, 12299, 13230, 13554, 15060, 15813, 15876, 17570, 19845, 20331, 21084, 22590, 24598, 26355, 26460, 27108, 31626, 33885, 35140, 36897, 39690, 40662, 45180, 47439, 49196, 52710, 61495, 63252, 67770, 73794, 79065, 79380, 81324, 94878, 101655, 105420, 110691, 122990, 135540, 142317, 147588, 158130, 184485, 189756, 203310, 221382, 237195, 245980, 284634, 316260, 332073, 368970, 406620, 442764, 474390, 553455, 569268, 664146, 711585, 737940, 948780, 996219, 1106910, 1328292, 1423170, 1660365, 1992438, 2213820, 2846340, 3320730, 3984876, 4981095, 6641460, 9962190, 19924380]

約数ペア:

[(1, 19924380), (2, 9962190), (3, 6641460), (4, 4981095), (5, 3984876), (6, 3320730), (7, 2846340), (9, 2213820), (10, 1992438), (12, 1660365), (14, 1423170), (15, 1328292), (18, 1106910), (20, 996219), (21, 948780), (27, 737940), (28, 711585), (30, 664146), (35, 569268), (36, 553455), (42, 474390), (45, 442764), (49, 406620), (54, 368970), (60, 332073), (63, 316260), (70, 284634), (81, 245980), (84, 237195), (90, 221382), (98, 203310), (105, 189756), (108, 184485), (126, 158130), (135, 147588), (140, 142317), (147, 135540), (162, 122990), (180, 110691), (189, 105420), (196, 101655), (210, 94878), (245, 81324), (251, 79380), (252, 79065), (270, 73794), (294, 67770), (315, 63252), (324, 61495), (378, 52710), (405, 49196), (420, 47439), (441, 45180), (490, 40662), (502, 39690), (540, 36897), (567, 35140), (588, 33885), (630, 31626), (735, 27108), (753, 26460), (756, 26355), (810, 24598), (882, 22590), (945, 21084), (980, 20331), (1004, 19845), (1134, 17570), (1255, 15876), (1260, 15813), (1323, 15060), (1470, 13554), (1506, 13230), (1620, 12299), (1757, 11340), (1764, 11295), (1890, 10542), (2205, 9036), (2259, 8820), (2268, 8785), (2510, 7938), (2646, 7530), (2835, 7028), (2940, 6777), (3012, 6615), (3514, 5670), (3765, 5292), (3780, 5271), (3969, 5020), (4410, 4518)]