209967940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16481}}^1$

素因数の和:16517

約数の個数: 72

約数和(自身を含む): 552410712

約数和(自身を除く): 342442772

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6370, 12740, 16481, 32962, 65924, 82405, 115367, 164810, 214253, 230734, 329620, 428506, 461468, 576835, 807569, 857012, 1071265, 1153670, 1499771, 1615138, 2142530, 2307340, 2999542, 3230276, 4037845, 4285060, 5999084, 7498855, 8075690, 10498397, 14997710, 16151380, 20996794, 29995420, 41993588, 52491985, 104983970, 209967940]

約数ペア:

[(1, 209967940), (2, 104983970), (4, 52491985), (5, 41993588), (7, 29995420), (10, 20996794), (13, 16151380), (14, 14997710), (20, 10498397), (26, 8075690), (28, 7498855), (35, 5999084), (49, 4285060), (52, 4037845), (65, 3230276), (70, 2999542), (91, 2307340), (98, 2142530), (130, 1615138), (140, 1499771), (182, 1153670), (196, 1071265), (245, 857012), (260, 807569), (364, 576835), (455, 461468), (490, 428506), (637, 329620), (910, 230734), (980, 214253), (1274, 164810), (1820, 115367), (2548, 82405), (3185, 65924), (6370, 32962), (12740, 16481)]