21047972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1481}}^1$

素因数の和:1532

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 23767708

約数列:

[1, 2, 4, 11, 17, 19, 22, 34, 38, 44, 68, 76, 187, 209, 323, 374, 418, 646, 748, 836, 1292, 1481, 2962, 3553, 5924, 7106, 14212, 16291, 25177, 28139, 32582, 50354, 56278, 65164, 100708, 112556, 276947, 309529, 478363, 553894, 619058, 956726, 1107788, 1238116, 1913452, 5261993, 10523986, 21047972]

約数ペア:

[(1, 21047972), (2, 10523986), (4, 5261993), (11, 1913452), (17, 1238116), (19, 1107788), (22, 956726), (34, 619058), (38, 553894), (44, 478363), (68, 309529), (76, 276947), (187, 112556), (209, 100708), (323, 65164), (374, 56278), (418, 50354), (646, 32582), (748, 28139), (836, 25177), (1292, 16291), (1481, 14212), (2962, 7106), (3553, 5924)]