20115160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{383}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 29236520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 383, 404, 505, 520, 766, 808, 1010, 1313, 1532, 1915, 2020, 2626, 3064, 3830, 4040, 4979, 5252, 6565, 7660, 9958, 10504, 13130, 15320, 19916, 24895, 26260, 38683, 39832, 49790, 52520, 77366, 99580, 154732, 193415, 199160, 309464, 386830, 502879, 773660, 1005758, 1547320, 2011516, 2514395, 4023032, 5028790, 10057580, 20115160]

約数ペア:

[(1, 20115160), (2, 10057580), (4, 5028790), (5, 4023032), (8, 2514395), (10, 2011516), (13, 1547320), (20, 1005758), (26, 773660), (40, 502879), (52, 386830), (65, 309464), (101, 199160), (104, 193415), (130, 154732), (202, 99580), (260, 77366), (383, 52520), (404, 49790), (505, 39832), (520, 38683), (766, 26260), (808, 24895), (1010, 19916), (1313, 15320), (1532, 13130), (1915, 10504), (2020, 9958), (2626, 7660), (3064, 6565), (3830, 5252), (4040, 4979)]