19440988

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 40547584

約数和(自身を除く): 21106596

約数列:

[1, 2, 4, 7, 14, 28, 43, 67, 86, 134, 172, 241, 268, 301, 469, 482, 602, 938, 964, 1204, 1687, 1876, 2881, 3374, 5762, 6748, 10363, 11524, 16147, 20167, 20726, 32294, 40334, 41452, 64588, 72541, 80668, 113029, 145082, 226058, 290164, 452116, 694321, 1388642, 2777284, 4860247, 9720494, 19440988]

約数ペア:

[(1, 19440988), (2, 9720494), (4, 4860247), (7, 2777284), (14, 1388642), (28, 694321), (43, 452116), (67, 290164), (86, 226058), (134, 145082), (172, 113029), (241, 80668), (268, 72541), (301, 64588), (469, 41452), (482, 40334), (602, 32294), (938, 20726), (964, 20167), (1204, 16147), (1687, 11524), (1876, 10363), (2881, 6748), (3374, 5762)]