20736720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{347}}^1$

素因数の和:449

約数の個数: 120

約数和(自身を含む): 70682976

約数和(自身を除く): 49946256

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 83, 90, 120, 144, 166, 180, 240, 249, 332, 347, 360, 415, 498, 664, 694, 720, 747, 830, 996, 1041, 1245, 1328, 1388, 1494, 1660, 1735, 1992, 2082, 2490, 2776, 2988, 3123, 3320, 3470, 3735, 3984, 4164, 4980, 5205, 5552, 5976, 6246, 6640, 6940, 7470, 8328, 9960, 10410, 11952, 12492, 13880, 14940, 15615, 16656, 19920, 20820, 24984, 27760, 28801, 29880, 31230, 41640, 49968, 57602, 59760, 62460, 83280, 86403, 115204, 124920, 144005, 172806, 230408, 249840, 259209, 288010, 345612, 432015, 460816, 518418, 576020, 691224, 864030, 1036836, 1152040, 1296045, 1382448, 1728060, 2073672, 2304080, 2592090, 3456120, 4147344, 5184180, 6912240, 10368360, 20736720]

約数ペア:

[(1, 20736720), (2, 10368360), (3, 6912240), (4, 5184180), (5, 4147344), (6, 3456120), (8, 2592090), (9, 2304080), (10, 2073672), (12, 1728060), (15, 1382448), (16, 1296045), (18, 1152040), (20, 1036836), (24, 864030), (30, 691224), (36, 576020), (40, 518418), (45, 460816), (48, 432015), (60, 345612), (72, 288010), (80, 259209), (83, 249840), (90, 230408), (120, 172806), (144, 144005), (166, 124920), (180, 115204), (240, 86403), (249, 83280), (332, 62460), (347, 59760), (360, 57602), (415, 49968), (498, 41640), (664, 31230), (694, 29880), (720, 28801), (747, 27760), (830, 24984), (996, 20820), (1041, 19920), (1245, 16656), (1328, 15615), (1388, 14940), (1494, 13880), (1660, 12492), (1735, 11952), (1992, 10410), (2082, 9960), (2490, 8328), (2776, 7470), (2988, 6940), (3123, 6640), (3320, 6246), (3470, 5976), (3735, 5552), (3984, 5205), (4164, 4980)]