21883940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1153}}^1$

素因数の和:1248

約数の個数: 48

約数和(自身を含む): 50212848

約数和(自身を除く): 28328908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1153, 1460, 1898, 2306, 3796, 4612, 4745, 5765, 9490, 11530, 14989, 18980, 23060, 29978, 59956, 74945, 84169, 149890, 168338, 299780, 336676, 420845, 841690, 1094197, 1683380, 2188394, 4376788, 5470985, 10941970, 21883940]

約数ペア:

[(1, 21883940), (2, 10941970), (4, 5470985), (5, 4376788), (10, 2188394), (13, 1683380), (20, 1094197), (26, 841690), (52, 420845), (65, 336676), (73, 299780), (130, 168338), (146, 149890), (260, 84169), (292, 74945), (365, 59956), (730, 29978), (949, 23060), (1153, 18980), (1460, 14989), (1898, 11530), (2306, 9490), (3796, 5765), (4612, 4745)]