142803980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20939}}^1$

素因数の和:20990

約数の個数: 48

約数和(自身を含む): 337720320

約数和(自身を除く): 194916340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 20939, 41878, 83756, 104695, 209390, 230329, 418780, 460658, 649109, 921316, 1151645, 1298218, 2303290, 2596436, 3245545, 4606580, 6491090, 7140199, 12982180, 14280398, 28560796, 35700995, 71401990, 142803980]

約数ペア:

[(1, 142803980), (2, 71401990), (4, 35700995), (5, 28560796), (10, 14280398), (11, 12982180), (20, 7140199), (22, 6491090), (31, 4606580), (44, 3245545), (55, 2596436), (62, 2303290), (110, 1298218), (124, 1151645), (155, 921316), (220, 649109), (310, 460658), (341, 418780), (620, 230329), (682, 209390), (1364, 104695), (1705, 83756), (3410, 41878), (6820, 20939)]