15771940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 34836480

約数和(自身を除く): 19064540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 383, 580, 710, 766, 1420, 1532, 1915, 2059, 3830, 4118, 7660, 8236, 10295, 11107, 20590, 22214, 27193, 41180, 44428, 54386, 55535, 108772, 111070, 135965, 222140, 271930, 543860, 788597, 1577194, 3154388, 3942985, 7885970, 15771940]

約数ペア:

[(1, 15771940), (2, 7885970), (4, 3942985), (5, 3154388), (10, 1577194), (20, 788597), (29, 543860), (58, 271930), (71, 222140), (116, 135965), (142, 111070), (145, 108772), (284, 55535), (290, 54386), (355, 44428), (383, 41180), (580, 27193), (710, 22214), (766, 20590), (1420, 11107), (1532, 10295), (1915, 8236), (2059, 7660), (3830, 4118)]