64390360

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 150343200

約数和(自身を除く): 85952840

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 139, 148, 185, 278, 296, 313, 370, 556, 626, 695, 740, 1112, 1252, 1390, 1480, 1565, 2504, 2780, 3130, 5143, 5560, 6260, 10286, 11581, 12520, 20572, 23162, 25715, 41144, 43507, 46324, 51430, 57905, 87014, 92648, 102860, 115810, 174028, 205720, 217535, 231620, 348056, 435070, 463240, 870140, 1609759, 1740280, 3219518, 6439036, 8048795, 12878072, 16097590, 32195180, 64390360]

約数ペア:

[(1, 64390360), (2, 32195180), (4, 16097590), (5, 12878072), (8, 8048795), (10, 6439036), (20, 3219518), (37, 1740280), (40, 1609759), (74, 870140), (139, 463240), (148, 435070), (185, 348056), (278, 231620), (296, 217535), (313, 205720), (370, 174028), (556, 115810), (626, 102860), (695, 92648), (740, 87014), (1112, 57905), (1252, 51430), (1390, 46324), (1480, 43507), (1565, 41144), (2504, 25715), (2780, 23162), (3130, 20572), (5143, 12520), (5560, 11581), (6260, 10286)]