21295504

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70051}}^1$

素因数の和:70078

約数の個数: 20

約数和(自身を含む): 43432240

約数和(自身を除く): 22136736

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70051, 140102, 280204, 560408, 1120816, 1330969, 2661938, 5323876, 10647752, 21295504]

約数ペア:

[(1, 21295504), (2, 10647752), (4, 5323876), (8, 2661938), (16, 1330969), (19, 1120816), (38, 560408), (76, 280204), (152, 140102), (304, 70051)]