890336860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{809}}^1\times {\mathrm{1123}}^1$

素因数の和:1955

約数の個数: 72

約数和(自身を含む): 2179593360

約数和(自身を除く): 1289256500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 809, 980, 1123, 1618, 2246, 3236, 4045, 4492, 5615, 5663, 7861, 8090, 11230, 11326, 15722, 16180, 22460, 22652, 28315, 31444, 39305, 39641, 55027, 56630, 78610, 79282, 110054, 113260, 157220, 158564, 198205, 220108, 275135, 396410, 550270, 792820, 908507, 1100540, 1817014, 3634028, 4542535, 6359549, 9085070, 12719098, 18170140, 25438196, 31797745, 44516843, 63595490, 89033686, 127190980, 178067372, 222584215, 445168430, 890336860]

約数ペア:

[(1, 890336860), (2, 445168430), (4, 222584215), (5, 178067372), (7, 127190980), (10, 89033686), (14, 63595490), (20, 44516843), (28, 31797745), (35, 25438196), (49, 18170140), (70, 12719098), (98, 9085070), (140, 6359549), (196, 4542535), (245, 3634028), (490, 1817014), (809, 1100540), (980, 908507), (1123, 792820), (1618, 550270), (2246, 396410), (3236, 275135), (4045, 220108), (4492, 198205), (5615, 158564), (5663, 157220), (7861, 113260), (8090, 110054), (11230, 79282), (11326, 78610), (15722, 56630), (16180, 55027), (22460, 39641), (22652, 39305), (28315, 31444)]