20120457968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1\times {\mathrm{9043}}^1$

素因数の和:9646

約数の個数: 80

約数和(自身を含む): 44275082880

約数和(自身を除く): 24154624912

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 563, 988, 1126, 1976, 2252, 3952, 4504, 7319, 9008, 9043, 10697, 14638, 18086, 21394, 29276, 36172, 42788, 58552, 72344, 85576, 117104, 117559, 139061, 144688, 171152, 171817, 235118, 278122, 343634, 470236, 556244, 687268, 940472, 1112488, 1374536, 1880944, 2224976, 2233621, 2749072, 4467242, 5091209, 8934484, 10182418, 17868968, 20364836, 35737936, 40729672, 66185717, 81459344, 96732971, 132371434, 193465942, 264742868, 386931884, 529485736, 773863768, 1058971472, 1257528623, 1547727536, 2515057246, 5030114492, 10060228984, 20120457968]

約数ペア:

[(1, 20120457968), (2, 10060228984), (4, 5030114492), (8, 2515057246), (13, 1547727536), (16, 1257528623), (19, 1058971472), (26, 773863768), (38, 529485736), (52, 386931884), (76, 264742868), (104, 193465942), (152, 132371434), (208, 96732971), (247, 81459344), (304, 66185717), (494, 40729672), (563, 35737936), (988, 20364836), (1126, 17868968), (1976, 10182418), (2252, 8934484), (3952, 5091209), (4504, 4467242), (7319, 2749072), (9008, 2233621), (9043, 2224976), (10697, 1880944), (14638, 1374536), (18086, 1112488), (21394, 940472), (29276, 687268), (36172, 556244), (42788, 470236), (58552, 343634), (72344, 278122), (85576, 235118), (117104, 171817), (117559, 171152), (139061, 144688)]