205491920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2477}}^1$

素因数の和:2568

約数の個数: 80

約数和(自身を含む): 514373328

約数和(自身を除く): 308881408

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 61, 68, 80, 85, 122, 136, 170, 244, 272, 305, 340, 488, 610, 680, 976, 1037, 1220, 1360, 2074, 2440, 2477, 4148, 4880, 4954, 5185, 8296, 9908, 10370, 12385, 16592, 19816, 20740, 24770, 39632, 41480, 42109, 49540, 82960, 84218, 99080, 151097, 168436, 198160, 210545, 302194, 336872, 421090, 604388, 673744, 755485, 842180, 1208776, 1510970, 1684360, 2417552, 2568649, 3021940, 3368720, 5137298, 6043880, 10274596, 12087760, 12843245, 20549192, 25686490, 41098384, 51372980, 102745960, 205491920]

約数ペア:

[(1, 205491920), (2, 102745960), (4, 51372980), (5, 41098384), (8, 25686490), (10, 20549192), (16, 12843245), (17, 12087760), (20, 10274596), (34, 6043880), (40, 5137298), (61, 3368720), (68, 3021940), (80, 2568649), (85, 2417552), (122, 1684360), (136, 1510970), (170, 1208776), (244, 842180), (272, 755485), (305, 673744), (340, 604388), (488, 421090), (610, 336872), (680, 302194), (976, 210545), (1037, 198160), (1220, 168436), (1360, 151097), (2074, 99080), (2440, 84218), (2477, 82960), (4148, 49540), (4880, 42109), (4954, 41480), (5185, 39632), (8296, 24770), (9908, 20740), (10370, 19816), (12385, 16592)]