349780990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{1489}}^1$

素因数の和:1661

約数の個数: 48

約数和(自身を含む): 687128400

約数和(自身を除く): 337347410

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 169, 278, 338, 695, 845, 1390, 1489, 1690, 1807, 2978, 3614, 7445, 9035, 14890, 18070, 19357, 23491, 38714, 46982, 96785, 117455, 193570, 206971, 234910, 251641, 413942, 503282, 1034855, 1258205, 2069710, 2516410, 2690623, 5381246, 13453115, 26906230, 34978099, 69956198, 174890495, 349780990]

約数ペア:

[(1, 349780990), (2, 174890495), (5, 69956198), (10, 34978099), (13, 26906230), (26, 13453115), (65, 5381246), (130, 2690623), (139, 2516410), (169, 2069710), (278, 1258205), (338, 1034855), (695, 503282), (845, 413942), (1390, 251641), (1489, 234910), (1690, 206971), (1807, 193570), (2978, 117455), (3614, 96785), (7445, 46982), (9035, 38714), (14890, 23491), (18070, 19357)]