720790990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{79999}}^1$

素因数の和:80076

約数の個数: 32

約数和(自身を含む): 1399680000

約数和(自身を除く): 678889010

約数列:

[1, 2, 5, 10, 17, 34, 53, 85, 106, 170, 265, 530, 901, 1802, 4505, 9010, 79999, 159998, 399995, 799990, 1359983, 2719966, 4239947, 6799915, 8479894, 13599830, 21199735, 42399470, 72079099, 144158198, 360395495, 720790990]

約数ペア:

[(1, 720790990), (2, 360395495), (5, 144158198), (10, 72079099), (17, 42399470), (34, 21199735), (53, 13599830), (85, 8479894), (106, 6799915), (170, 4239947), (265, 2719966), (530, 1359983), (901, 799990), (1802, 399995), (4505, 159998), (9010, 79999)]