21276179632

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69987433}}^1$

素因数の和:69987460

約数の個数: 20

約数和(自身を含む): 43392209080

約数和(自身を除く): 22116029448

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69987433, 139974866, 279949732, 559899464, 1119798928, 1329761227, 2659522454, 5319044908, 10638089816, 21276179632]

約数ペア:

[(1, 21276179632), (2, 10638089816), (4, 5319044908), (8, 2659522454), (16, 1329761227), (19, 1119798928), (38, 559899464), (76, 279949732), (152, 139974866), (304, 69987433)]