20784330

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1571}}^1$

素因数の和:1601

約数の個数: 96

約数和(自身を含む): 64514880

約数和(自身を除く): 43730550

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1571, 1890, 2205, 2646, 3142, 4410, 4713, 6615, 7855, 9426, 10997, 13230, 14139, 15710, 21994, 23565, 28278, 32991, 42417, 47130, 54985, 65982, 70695, 76979, 84834, 98973, 109970, 141390, 153958, 164955, 197946, 212085, 230937, 296919, 329910, 384895, 424170, 461874, 494865, 593838, 692811, 769790, 989730, 1154685, 1385622, 1484595, 2078433, 2309370, 2969190, 3464055, 4156866, 6928110, 10392165, 20784330]

約数ペア:

[(1, 20784330), (2, 10392165), (3, 6928110), (5, 4156866), (6, 3464055), (7, 2969190), (9, 2309370), (10, 2078433), (14, 1484595), (15, 1385622), (18, 1154685), (21, 989730), (27, 769790), (30, 692811), (35, 593838), (42, 494865), (45, 461874), (49, 424170), (54, 384895), (63, 329910), (70, 296919), (90, 230937), (98, 212085), (105, 197946), (126, 164955), (135, 153958), (147, 141390), (189, 109970), (210, 98973), (245, 84834), (270, 76979), (294, 70695), (315, 65982), (378, 54985), (441, 47130), (490, 42417), (630, 32991), (735, 28278), (882, 23565), (945, 21994), (1323, 15710), (1470, 14139), (1571, 13230), (1890, 10997), (2205, 9426), (2646, 7855), (3142, 6615), (4410, 4713)]