209811980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{2833}}^1$

素因数の和:2895

約数の個数: 72

約数和(自身を含む): 526579872

約数和(自身を除く): 316767892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 529, 644, 805, 1058, 1610, 2116, 2645, 2833, 3220, 3703, 5290, 5666, 7406, 10580, 11332, 14165, 14812, 18515, 19831, 28330, 37030, 39662, 56660, 65159, 74060, 79324, 99155, 130318, 198310, 260636, 325795, 396620, 456113, 651590, 912226, 1303180, 1498657, 1824452, 2280565, 2997314, 4561130, 5994628, 7493285, 9122260, 10490599, 14986570, 20981198, 29973140, 41962396, 52452995, 104905990, 209811980]

約数ペア:

[(1, 209811980), (2, 104905990), (4, 52452995), (5, 41962396), (7, 29973140), (10, 20981198), (14, 14986570), (20, 10490599), (23, 9122260), (28, 7493285), (35, 5994628), (46, 4561130), (70, 2997314), (92, 2280565), (115, 1824452), (140, 1498657), (161, 1303180), (230, 912226), (322, 651590), (460, 456113), (529, 396620), (644, 325795), (805, 260636), (1058, 198310), (1610, 130318), (2116, 99155), (2645, 79324), (2833, 74060), (3220, 65159), (3703, 56660), (5290, 39662), (5666, 37030), (7406, 28330), (10580, 19831), (11332, 18515), (14165, 14812)]