21631408

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1367}}^1$

素因数の和:1441

約数の個数: 40

約数和(自身を含む): 44782848

約数和(自身を除く): 23151440

約数列:

[1, 2, 4, 8, 16, 23, 43, 46, 86, 92, 172, 184, 344, 368, 688, 989, 1367, 1978, 2734, 3956, 5468, 7912, 10936, 15824, 21872, 31441, 58781, 62882, 117562, 125764, 235124, 251528, 470248, 503056, 940496, 1351963, 2703926, 5407852, 10815704, 21631408]

約数ペア:

[(1, 21631408), (2, 10815704), (4, 5407852), (8, 2703926), (16, 1351963), (23, 940496), (43, 503056), (46, 470248), (86, 251528), (92, 235124), (172, 125764), (184, 117562), (344, 62882), (368, 58781), (688, 31441), (989, 21872), (1367, 15824), (1978, 10936), (2734, 7912), (3956, 5468)]