217632961

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{641}}^1$

素因数の和:722

約数の個数: 36

約数和(自身を含む): 281261484

約数和(自身を除く): 63628523

約数列:

[1, 7, 13, 41, 49, 91, 169, 287, 533, 637, 641, 1183, 2009, 3731, 4487, 6929, 8281, 8333, 26117, 26281, 31409, 48503, 58331, 108329, 183967, 339521, 341653, 408317, 758303, 1287769, 2391571, 4441489, 5308121, 16740997, 31090423, 217632961]

約数ペア:

[(1, 217632961), (7, 31090423), (13, 16740997), (41, 5308121), (49, 4441489), (91, 2391571), (169, 1287769), (287, 758303), (533, 408317), (637, 341653), (641, 339521), (1183, 183967), (2009, 108329), (3731, 58331), (4487, 48503), (6929, 31409), (8281, 26281), (8333, 26117)]