21683220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27799}}^1$

素因数の和:27824

約数の個数: 48

約数和(自身を含む): 65385600

約数和(自身を除く): 43702380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27799, 55598, 83397, 111196, 138995, 166794, 277990, 333588, 361387, 416985, 555980, 722774, 833970, 1084161, 1445548, 1667940, 1806935, 2168322, 3613870, 4336644, 5420805, 7227740, 10841610, 21683220]

約数ペア:

[(1, 21683220), (2, 10841610), (3, 7227740), (4, 5420805), (5, 4336644), (6, 3613870), (10, 2168322), (12, 1806935), (13, 1667940), (15, 1445548), (20, 1084161), (26, 833970), (30, 722774), (39, 555980), (52, 416985), (60, 361387), (65, 333588), (78, 277990), (130, 166794), (156, 138995), (195, 111196), (260, 83397), (390, 55598), (780, 27799)]