21505408

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{9883}}^1$

素因数の和:9914

約数の個数: 32

約数和(自身を含む): 45367560

約数和(自身を除く): 23862152

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 272, 544, 1088, 2176, 9883, 19766, 39532, 79064, 158128, 168011, 316256, 336022, 632512, 672044, 1265024, 1344088, 2688176, 5376352, 10752704, 21505408]

約数ペア:

[(1, 21505408), (2, 10752704), (4, 5376352), (8, 2688176), (16, 1344088), (17, 1265024), (32, 672044), (34, 632512), (64, 336022), (68, 316256), (128, 168011), (136, 158128), (272, 79064), (544, 39532), (1088, 19766), (2176, 9883)]