1291217080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1\times {\mathrm{1289}}^1$

素因数の和:1696

約数の個数: 64

約数和(自身を含む): 2953584000

約数和(自身を除く): 1662366920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 317, 395, 632, 634, 790, 1268, 1289, 1580, 1585, 2536, 2578, 3160, 3170, 5156, 6340, 6445, 10312, 12680, 12890, 25043, 25780, 50086, 51560, 100172, 101831, 125215, 200344, 203662, 250430, 407324, 408613, 500860, 509155, 814648, 817226, 1001720, 1018310, 1634452, 2036620, 2043065, 3268904, 4073240, 4086130, 8172260, 16344520, 32280427, 64560854, 129121708, 161402135, 258243416, 322804270, 645608540, 1291217080]

約数ペア:

[(1, 1291217080), (2, 645608540), (4, 322804270), (5, 258243416), (8, 161402135), (10, 129121708), (20, 64560854), (40, 32280427), (79, 16344520), (158, 8172260), (316, 4086130), (317, 4073240), (395, 3268904), (632, 2043065), (634, 2036620), (790, 1634452), (1268, 1018310), (1289, 1001720), (1580, 817226), (1585, 814648), (2536, 509155), (2578, 500860), (3160, 408613), (3170, 407324), (5156, 250430), (6340, 203662), (6445, 200344), (10312, 125215), (12680, 101831), (12890, 100172), (25043, 51560), (25780, 50086)]