81271520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{757}}^1$

素因数の和:844

約数の個数: 96

約数和(自身を含む): 213173856

約数和(自身を除く): 131902336

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 80, 88, 110, 122, 160, 176, 220, 244, 305, 352, 440, 488, 610, 671, 757, 880, 976, 1220, 1342, 1514, 1760, 1952, 2440, 2684, 3028, 3355, 3785, 4880, 5368, 6056, 6710, 7570, 8327, 9760, 10736, 12112, 13420, 15140, 16654, 21472, 24224, 26840, 30280, 33308, 41635, 46177, 53680, 60560, 66616, 83270, 92354, 107360, 121120, 133232, 166540, 184708, 230885, 266464, 333080, 369416, 461770, 507947, 666160, 738832, 923540, 1015894, 1332320, 1477664, 1847080, 2031788, 2539735, 3694160, 4063576, 5079470, 7388320, 8127152, 10158940, 16254304, 20317880, 40635760, 81271520]

約数ペア:

[(1, 81271520), (2, 40635760), (4, 20317880), (5, 16254304), (8, 10158940), (10, 8127152), (11, 7388320), (16, 5079470), (20, 4063576), (22, 3694160), (32, 2539735), (40, 2031788), (44, 1847080), (55, 1477664), (61, 1332320), (80, 1015894), (88, 923540), (110, 738832), (122, 666160), (160, 507947), (176, 461770), (220, 369416), (244, 333080), (305, 266464), (352, 230885), (440, 184708), (488, 166540), (610, 133232), (671, 121120), (757, 107360), (880, 92354), (976, 83270), (1220, 66616), (1342, 60560), (1514, 53680), (1760, 46177), (1952, 41635), (2440, 33308), (2684, 30280), (3028, 26840), (3355, 24224), (3785, 21472), (4880, 16654), (5368, 15140), (6056, 13420), (6710, 12112), (7570, 10736), (8327, 9760)]