78147540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3169}}^1$

素因数の和:3321

約数の個数: 72

約数和(自身を含む): 238853160

約数和(自身を除く): 160705620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 822, 1233, 1370, 1644, 2055, 2466, 2740, 3169, 4110, 4932, 6165, 6338, 8220, 9507, 12330, 12676, 15845, 19014, 24660, 28521, 31690, 38028, 47535, 57042, 63380, 95070, 114084, 142605, 190140, 285210, 434153, 570420, 868306, 1302459, 1736612, 2170765, 2604918, 3907377, 4341530, 5209836, 6512295, 7814754, 8683060, 13024590, 15629508, 19536885, 26049180, 39073770, 78147540]

約数ペア:

[(1, 78147540), (2, 39073770), (3, 26049180), (4, 19536885), (5, 15629508), (6, 13024590), (9, 8683060), (10, 7814754), (12, 6512295), (15, 5209836), (18, 4341530), (20, 3907377), (30, 2604918), (36, 2170765), (45, 1736612), (60, 1302459), (90, 868306), (137, 570420), (180, 434153), (274, 285210), (411, 190140), (548, 142605), (685, 114084), (822, 95070), (1233, 63380), (1370, 57042), (1644, 47535), (2055, 38028), (2466, 31690), (2740, 28521), (3169, 24660), (4110, 19014), (4932, 15845), (6165, 12676), (6338, 12330), (8220, 9507)]