1640986450

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{499}}^1\times {\mathrm{739}}^1$

素因数の和:1339

約数の個数: 48

約数和(自身を含む): 3096900000

約数和(自身を除く): 1455913550

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 499, 739, 890, 998, 1478, 2225, 2495, 3695, 4450, 4990, 7390, 12475, 18475, 24950, 36950, 44411, 65771, 88822, 131542, 222055, 328855, 368761, 444110, 657710, 737522, 1110275, 1644275, 1843805, 2220550, 3288550, 3687610, 9219025, 18438050, 32819729, 65639458, 164098645, 328197290, 820493225, 1640986450]

約数ペア:

[(1, 1640986450), (2, 820493225), (5, 328197290), (10, 164098645), (25, 65639458), (50, 32819729), (89, 18438050), (178, 9219025), (445, 3687610), (499, 3288550), (739, 2220550), (890, 1843805), (998, 1644275), (1478, 1110275), (2225, 737522), (2495, 657710), (3695, 444110), (4450, 368761), (4990, 328855), (7390, 222055), (12475, 131542), (18475, 88822), (24950, 65771), (36950, 44411)]