21329704

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12757}}^1$

素因数の和:12793

約数の個数: 32

約数和(自身を含む): 45928800

約数和(自身を除く): 24599096

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12757, 25514, 51028, 102056, 140327, 242383, 280654, 484766, 561308, 969532, 1122616, 1939064, 2666213, 5332426, 10664852, 21329704]

約数ペア:

[(1, 21329704), (2, 10664852), (4, 5332426), (8, 2666213), (11, 1939064), (19, 1122616), (22, 969532), (38, 561308), (44, 484766), (76, 280654), (88, 242383), (152, 140327), (209, 102056), (418, 51028), (836, 25514), (1672, 12757)]