72180920

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{5261}}^1$

素因数の和:5293

約数の個数: 64

約数和(自身を含む): 189432000

約数和(自身を除く): 117251080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2744, 3430, 5261, 6860, 10522, 13720, 21044, 26305, 36827, 42088, 52610, 73654, 105220, 147308, 184135, 210440, 257789, 294616, 368270, 515578, 736540, 1031156, 1288945, 1473080, 1804523, 2062312, 2577890, 3609046, 5155780, 7218092, 9022615, 10311560, 14436184, 18045230, 36090460, 72180920]

約数ペア:

[(1, 72180920), (2, 36090460), (4, 18045230), (5, 14436184), (7, 10311560), (8, 9022615), (10, 7218092), (14, 5155780), (20, 3609046), (28, 2577890), (35, 2062312), (40, 1804523), (49, 1473080), (56, 1288945), (70, 1031156), (98, 736540), (140, 515578), (196, 368270), (245, 294616), (280, 257789), (343, 210440), (392, 184135), (490, 147308), (686, 105220), (980, 73654), (1372, 52610), (1715, 42088), (1960, 36827), (2744, 26305), (3430, 21044), (5261, 13720), (6860, 10522)]