21191248

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:512

約数の個数: 60

約数和(自身を含む): 47176668

約数和(自身を除く): 25985420

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 169, 208, 221, 272, 338, 442, 461, 676, 884, 922, 1352, 1768, 1844, 2704, 2873, 3536, 3688, 5746, 5993, 7376, 7837, 11492, 11986, 15674, 22984, 23972, 31348, 45968, 47944, 62696, 77909, 95888, 101881, 125392, 155818, 203762, 311636, 407524, 623272, 815048, 1246544, 1324453, 1630096, 2648906, 5297812, 10595624, 21191248]

約数ペア:

[(1, 21191248), (2, 10595624), (4, 5297812), (8, 2648906), (13, 1630096), (16, 1324453), (17, 1246544), (26, 815048), (34, 623272), (52, 407524), (68, 311636), (104, 203762), (136, 155818), (169, 125392), (208, 101881), (221, 95888), (272, 77909), (338, 62696), (442, 47944), (461, 45968), (676, 31348), (884, 23972), (922, 22984), (1352, 15674), (1768, 11986), (1844, 11492), (2704, 7837), (2873, 7376), (3536, 5993), (3688, 5746)]