20264868

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 60540480

約数和(自身を除く): 40275612

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 43, 52, 53, 57, 76, 78, 86, 106, 114, 117, 129, 156, 159, 171, 172, 212, 228, 234, 247, 258, 318, 342, 387, 468, 477, 494, 516, 559, 636, 684, 689, 741, 774, 817, 954, 988, 1007, 1118, 1378, 1482, 1548, 1634, 1677, 1908, 2014, 2067, 2223, 2236, 2279, 2451, 2756, 2964, 3021, 3268, 3354, 4028, 4134, 4446, 4558, 4902, 5031, 6042, 6201, 6708, 6837, 7353, 8268, 8892, 9063, 9116, 9804, 10062, 10621, 12084, 12402, 13091, 13674, 14706, 18126, 20124, 20511, 21242, 24804, 26182, 27348, 29412, 29627, 31863, 36252, 39273, 41022, 42484, 43301, 52364, 59254, 63726, 78546, 82044, 86602, 88881, 95589, 117819, 118508, 127452, 129903, 157092, 173204, 177762, 191178, 235638, 259806, 266643, 355524, 382356, 389709, 471276, 519612, 533286, 562913, 779418, 1066572, 1125826, 1558836, 1688739, 2251652, 3377478, 5066217, 6754956, 10132434, 20264868]

約数ペア:

[(1, 20264868), (2, 10132434), (3, 6754956), (4, 5066217), (6, 3377478), (9, 2251652), (12, 1688739), (13, 1558836), (18, 1125826), (19, 1066572), (26, 779418), (36, 562913), (38, 533286), (39, 519612), (43, 471276), (52, 389709), (53, 382356), (57, 355524), (76, 266643), (78, 259806), (86, 235638), (106, 191178), (114, 177762), (117, 173204), (129, 157092), (156, 129903), (159, 127452), (171, 118508), (172, 117819), (212, 95589), (228, 88881), (234, 86602), (247, 82044), (258, 78546), (318, 63726), (342, 59254), (387, 52364), (468, 43301), (477, 42484), (494, 41022), (516, 39273), (559, 36252), (636, 31863), (684, 29627), (689, 29412), (741, 27348), (774, 26182), (817, 24804), (954, 21242), (988, 20511), (1007, 20124), (1118, 18126), (1378, 14706), (1482, 13674), (1548, 13091), (1634, 12402), (1677, 12084), (1908, 10621), (2014, 10062), (2067, 9804), (2223, 9116), (2236, 9063), (2279, 8892), (2451, 8268), (2756, 7353), (2964, 6837), (3021, 6708), (3268, 6201), (3354, 6042), (4028, 5031), (4134, 4902), (4446, 4558)]