21681478260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9265589}}^1$

素因数の和:9265617

約数の個数: 72

約数和(自身を含む): 70826169960

約数和(自身を除く): 49144691700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9265589, 18531178, 27796767, 37062356, 46327945, 55593534, 83390301, 92655890, 111187068, 120452657, 138983835, 166780602, 185311780, 240905314, 277967670, 333561204, 361357971, 416951505, 481810628, 555935340, 602263285, 722715942, 833903010, 1084073913, 1204526570, 1445431884, 1667806020, 1806789855, 2168147826, 2409053140, 3613579710, 4336295652, 5420369565, 7227159420, 10840739130, 21681478260]

約数ペア:

[(1, 21681478260), (2, 10840739130), (3, 7227159420), (4, 5420369565), (5, 4336295652), (6, 3613579710), (9, 2409053140), (10, 2168147826), (12, 1806789855), (13, 1667806020), (15, 1445431884), (18, 1204526570), (20, 1084073913), (26, 833903010), (30, 722715942), (36, 602263285), (39, 555935340), (45, 481810628), (52, 416951505), (60, 361357971), (65, 333561204), (78, 277967670), (90, 240905314), (117, 185311780), (130, 166780602), (156, 138983835), (180, 120452657), (195, 111187068), (234, 92655890), (260, 83390301), (390, 55593534), (468, 46327945), (585, 37062356), (780, 27796767), (1170, 18531178), (2340, 9265589)]