21103664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77587}}^1$

素因数の和:77612

約数の個数: 20

約数和(自身を含む): 43294104

約数和(自身を除く): 22190440

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77587, 155174, 310348, 620696, 1241392, 1318979, 2637958, 5275916, 10551832, 21103664]

約数ペア:

[(1, 21103664), (2, 10551832), (4, 5275916), (8, 2637958), (16, 1318979), (17, 1241392), (34, 620696), (68, 310348), (136, 155174), (272, 77587)]