21989954

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^3\times {\mathrm{229}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 39964800

約数和(自身を除く): 17974846

約数列:

[1, 2, 7, 14, 19, 38, 133, 229, 266, 361, 458, 722, 1603, 2527, 3206, 4351, 5054, 6859, 8702, 13718, 30457, 48013, 60914, 82669, 96026, 165338, 578683, 1157366, 1570711, 3141422, 10994977, 21989954]

約数ペア:

[(1, 21989954), (2, 10994977), (7, 3141422), (14, 1570711), (19, 1157366), (38, 578683), (133, 165338), (229, 96026), (266, 82669), (361, 60914), (458, 48013), (722, 30457), (1603, 13718), (2527, 8702), (3206, 6859), (4351, 5054)]