15778420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2621}}^1$

素因数の和:2680

約数の個数: 48

約数和(自身を含む): 38763648

約数和(自身を除く): 22985228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 2621, 3010, 5242, 6020, 10484, 13105, 18347, 26210, 36694, 52420, 73388, 91735, 112703, 183470, 225406, 366940, 450812, 563515, 788921, 1127030, 1577842, 2254060, 3155684, 3944605, 7889210, 15778420]

約数ペア:

[(1, 15778420), (2, 7889210), (4, 3944605), (5, 3155684), (7, 2254060), (10, 1577842), (14, 1127030), (20, 788921), (28, 563515), (35, 450812), (43, 366940), (70, 225406), (86, 183470), (140, 112703), (172, 91735), (215, 73388), (301, 52420), (430, 36694), (602, 26210), (860, 18347), (1204, 13105), (1505, 10484), (2621, 6020), (3010, 5242)]