20480580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 71124480

約数和(自身を除く): 50643900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 27, 30, 34, 36, 45, 46, 51, 54, 60, 68, 69, 85, 90, 92, 97, 102, 108, 115, 135, 138, 153, 170, 180, 194, 204, 207, 230, 255, 270, 276, 291, 306, 340, 345, 388, 391, 414, 459, 460, 485, 510, 540, 582, 612, 621, 690, 765, 782, 828, 873, 918, 970, 1020, 1035, 1164, 1173, 1242, 1380, 1455, 1530, 1564, 1649, 1746, 1836, 1940, 1955, 2070, 2231, 2295, 2346, 2484, 2619, 2910, 3060, 3105, 3298, 3492, 3519, 3910, 4140, 4365, 4462, 4590, 4692, 4947, 5238, 5820, 5865, 6210, 6596, 6693, 7038, 7820, 8245, 8730, 8924, 9180, 9894, 10476, 10557, 11155, 11730, 12420, 13095, 13386, 14076, 14841, 16490, 17460, 17595, 19788, 20079, 21114, 22310, 23460, 24735, 26190, 26772, 29682, 32980, 33465, 35190, 37927, 40158, 42228, 44523, 44620, 49470, 52380, 52785, 59364, 60237, 66930, 70380, 74205, 75854, 80316, 89046, 98940, 100395, 105570, 113781, 120474, 133860, 148410, 151708, 178092, 189635, 200790, 211140, 222615, 227562, 240948, 296820, 301185, 341343, 379270, 401580, 445230, 455124, 568905, 602370, 682686, 758540, 890460, 1024029, 1137810, 1204740, 1365372, 1706715, 2048058, 2275620, 3413430, 4096116, 5120145, 6826860, 10240290, 20480580]

約数ペア:

[(1, 20480580), (2, 10240290), (3, 6826860), (4, 5120145), (5, 4096116), (6, 3413430), (9, 2275620), (10, 2048058), (12, 1706715), (15, 1365372), (17, 1204740), (18, 1137810), (20, 1024029), (23, 890460), (27, 758540), (30, 682686), (34, 602370), (36, 568905), (45, 455124), (46, 445230), (51, 401580), (54, 379270), (60, 341343), (68, 301185), (69, 296820), (85, 240948), (90, 227562), (92, 222615), (97, 211140), (102, 200790), (108, 189635), (115, 178092), (135, 151708), (138, 148410), (153, 133860), (170, 120474), (180, 113781), (194, 105570), (204, 100395), (207, 98940), (230, 89046), (255, 80316), (270, 75854), (276, 74205), (291, 70380), (306, 66930), (340, 60237), (345, 59364), (388, 52785), (391, 52380), (414, 49470), (459, 44620), (460, 44523), (485, 42228), (510, 40158), (540, 37927), (582, 35190), (612, 33465), (621, 32980), (690, 29682), (765, 26772), (782, 26190), (828, 24735), (873, 23460), (918, 22310), (970, 21114), (1020, 20079), (1035, 19788), (1164, 17595), (1173, 17460), (1242, 16490), (1380, 14841), (1455, 14076), (1530, 13386), (1564, 13095), (1649, 12420), (1746, 11730), (1836, 11155), (1940, 10557), (1955, 10476), (2070, 9894), (2231, 9180), (2295, 8924), (2346, 8730), (2484, 8245), (2619, 7820), (2910, 7038), (3060, 6693), (3105, 6596), (3298, 6210), (3492, 5865), (3519, 5820), (3910, 5238), (4140, 4947), (4365, 4692), (4462, 4590)]