20771280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1697}}^1$

素因数の和:1733

約数の個数: 120

約数和(自身を含む): 73903752

約数和(自身を除く): 53132472

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1697, 2040, 2448, 3060, 3394, 4080, 5091, 6120, 6788, 8485, 10182, 12240, 13576, 15273, 16970, 20364, 25455, 27152, 28849, 30546, 33940, 40728, 50910, 57698, 61092, 67880, 76365, 81456, 86547, 101820, 115396, 122184, 135760, 144245, 152730, 173094, 203640, 230792, 244368, 259641, 288490, 305460, 346188, 407280, 432735, 461584, 519282, 576980, 610920, 692376, 865470, 1038564, 1153960, 1221840, 1298205, 1384752, 1730940, 2077128, 2307920, 2596410, 3461880, 4154256, 5192820, 6923760, 10385640, 20771280]

約数ペア:

[(1, 20771280), (2, 10385640), (3, 6923760), (4, 5192820), (5, 4154256), (6, 3461880), (8, 2596410), (9, 2307920), (10, 2077128), (12, 1730940), (15, 1384752), (16, 1298205), (17, 1221840), (18, 1153960), (20, 1038564), (24, 865470), (30, 692376), (34, 610920), (36, 576980), (40, 519282), (45, 461584), (48, 432735), (51, 407280), (60, 346188), (68, 305460), (72, 288490), (80, 259641), (85, 244368), (90, 230792), (102, 203640), (120, 173094), (136, 152730), (144, 144245), (153, 135760), (170, 122184), (180, 115396), (204, 101820), (240, 86547), (255, 81456), (272, 76365), (306, 67880), (340, 61092), (360, 57698), (408, 50910), (510, 40728), (612, 33940), (680, 30546), (720, 28849), (765, 27152), (816, 25455), (1020, 20364), (1224, 16970), (1360, 15273), (1530, 13576), (1697, 12240), (2040, 10182), (2448, 8485), (3060, 6788), (3394, 6120), (4080, 5091)]