209220920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{523}}^1$

素因数の和:744

約数の個数: 64

約数和(自身を含む): 481597920

約数和(自身を除く): 272377000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 137, 146, 274, 292, 365, 523, 548, 584, 685, 730, 1046, 1096, 1370, 1460, 2092, 2615, 2740, 2920, 4184, 5230, 5480, 10001, 10460, 20002, 20920, 38179, 40004, 50005, 71651, 76358, 80008, 100010, 143302, 152716, 190895, 200020, 286604, 305432, 358255, 381790, 400040, 573208, 716510, 763580, 1433020, 1527160, 2866040, 5230523, 10461046, 20922092, 26152615, 41844184, 52305230, 104610460, 209220920]

約数ペア:

[(1, 209220920), (2, 104610460), (4, 52305230), (5, 41844184), (8, 26152615), (10, 20922092), (20, 10461046), (40, 5230523), (73, 2866040), (137, 1527160), (146, 1433020), (274, 763580), (292, 716510), (365, 573208), (523, 400040), (548, 381790), (584, 358255), (685, 305432), (730, 286604), (1046, 200020), (1096, 190895), (1370, 152716), (1460, 143302), (2092, 100010), (2615, 80008), (2740, 76358), (2920, 71651), (4184, 50005), (5230, 40004), (5480, 38179), (10001, 20920), (10460, 20002)]