21871444

素因数分解:

$2^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{739}}^1$

素因数の和:908

約数の個数: 36

約数和(自身を含む): 44879520

約数和(自身を除く): 23008076

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 151, 196, 302, 604, 739, 1057, 1478, 2114, 2956, 4228, 5173, 7399, 10346, 14798, 20692, 29596, 36211, 72422, 111589, 144844, 223178, 446356, 781123, 1562246, 3124492, 5467861, 10935722, 21871444]

約数ペア:

[(1, 21871444), (2, 10935722), (4, 5467861), (7, 3124492), (14, 1562246), (28, 781123), (49, 446356), (98, 223178), (151, 144844), (196, 111589), (302, 72422), (604, 36211), (739, 29596), (1057, 20692), (1478, 14798), (2114, 10346), (2956, 7399), (4228, 5173)]