19911318

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:461

約数の個数: 64

約数和(自身を含む): 48936960

約数和(自身を除く): 29025642

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 51, 79, 102, 119, 158, 237, 238, 353, 357, 474, 553, 706, 714, 1059, 1106, 1343, 1659, 2118, 2471, 2686, 3318, 4029, 4942, 6001, 7413, 8058, 9401, 12002, 14826, 18003, 18802, 27887, 28203, 36006, 42007, 55774, 56406, 83661, 84014, 126021, 167322, 195209, 252042, 390418, 474079, 585627, 948158, 1171254, 1422237, 2844474, 3318553, 6637106, 9955659, 19911318]

約数ペア:

[(1, 19911318), (2, 9955659), (3, 6637106), (6, 3318553), (7, 2844474), (14, 1422237), (17, 1171254), (21, 948158), (34, 585627), (42, 474079), (51, 390418), (79, 252042), (102, 195209), (119, 167322), (158, 126021), (237, 84014), (238, 83661), (353, 56406), (357, 55774), (474, 42007), (553, 36006), (706, 28203), (714, 27887), (1059, 18802), (1106, 18003), (1343, 14826), (1659, 12002), (2118, 9401), (2471, 8058), (2686, 7413), (3318, 6001), (4029, 4942)]