21266776

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{773}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 42260400

約数和(自身を除く): 20993624

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 181, 362, 724, 773, 1448, 1546, 3092, 3439, 6184, 6878, 13756, 14687, 27512, 29374, 58748, 117496, 139913, 279826, 559652, 1119304, 2658347, 5316694, 10633388, 21266776]

約数ペア:

[(1, 21266776), (2, 10633388), (4, 5316694), (8, 2658347), (19, 1119304), (38, 559652), (76, 279826), (152, 139913), (181, 117496), (362, 58748), (724, 29374), (773, 27512), (1448, 14687), (1546, 13756), (3092, 6878), (3439, 6184)]