15721140860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{189823}}^1$

素因数の和:189974

約数の個数: 48

約数和(自身を含む): 34154652672

約数和(自身を除く): 18433511812

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 101, 164, 202, 205, 404, 410, 505, 820, 1010, 2020, 4141, 8282, 16564, 20705, 41410, 82820, 189823, 379646, 759292, 949115, 1898230, 3796460, 7782743, 15565486, 19172123, 31130972, 38344246, 38913715, 76688492, 77827430, 95860615, 155654860, 191721230, 383442460, 786057043, 1572114086, 3144228172, 3930285215, 7860570430, 15721140860]

約数ペア:

[(1, 15721140860), (2, 7860570430), (4, 3930285215), (5, 3144228172), (10, 1572114086), (20, 786057043), (41, 383442460), (82, 191721230), (101, 155654860), (164, 95860615), (202, 77827430), (205, 76688492), (404, 38913715), (410, 38344246), (505, 31130972), (820, 19172123), (1010, 15565486), (2020, 7782743), (4141, 3796460), (8282, 1898230), (16564, 949115), (20705, 759292), (41410, 379646), (82820, 189823)]