407971408

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{157}}^1$

素因数の和:253

約数の個数: 90

約数和(自身を含む): 890059662

約数和(自身を除く): 482088254

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 157, 169, 208, 248, 314, 338, 403, 496, 628, 676, 806, 961, 1256, 1352, 1612, 1922, 2041, 2512, 2704, 3224, 3844, 4082, 4867, 5239, 6448, 7688, 8164, 9734, 10478, 12493, 15376, 16328, 19468, 20956, 24986, 26533, 32656, 38936, 41912, 49972, 53066, 63271, 77872, 83824, 99944, 106132, 126542, 150877, 162409, 199888, 212264, 253084, 301754, 324818, 424528, 506168, 603508, 649636, 822523, 1012336, 1207016, 1299272, 1645046, 1961401, 2414032, 2598544, 3290092, 3922802, 6580184, 7845604, 13160368, 15691208, 25498213, 31382416, 50996426, 101992852, 203985704, 407971408]

約数ペア:

[(1, 407971408), (2, 203985704), (4, 101992852), (8, 50996426), (13, 31382416), (16, 25498213), (26, 15691208), (31, 13160368), (52, 7845604), (62, 6580184), (104, 3922802), (124, 3290092), (157, 2598544), (169, 2414032), (208, 1961401), (248, 1645046), (314, 1299272), (338, 1207016), (403, 1012336), (496, 822523), (628, 649636), (676, 603508), (806, 506168), (961, 424528), (1256, 324818), (1352, 301754), (1612, 253084), (1922, 212264), (2041, 199888), (2512, 162409), (2704, 150877), (3224, 126542), (3844, 106132), (4082, 99944), (4867, 83824), (5239, 77872), (6448, 63271), (7688, 53066), (8164, 49972), (9734, 41912), (10478, 38936), (12493, 32656), (15376, 26533), (16328, 24986), (19468, 20956)]