38515640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 90720000

約数和(自身を除く): 52204360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 89, 124, 155, 178, 248, 310, 349, 356, 445, 620, 698, 712, 890, 1240, 1396, 1745, 1780, 2759, 2792, 3490, 3560, 5518, 6980, 10819, 11036, 13795, 13960, 21638, 22072, 27590, 31061, 43276, 54095, 55180, 62122, 86552, 108190, 110360, 124244, 155305, 216380, 248488, 310610, 432760, 621220, 962891, 1242440, 1925782, 3851564, 4814455, 7703128, 9628910, 19257820, 38515640]

約数ペア:

[(1, 38515640), (2, 19257820), (4, 9628910), (5, 7703128), (8, 4814455), (10, 3851564), (20, 1925782), (31, 1242440), (40, 962891), (62, 621220), (89, 432760), (124, 310610), (155, 248488), (178, 216380), (248, 155305), (310, 124244), (349, 110360), (356, 108190), (445, 86552), (620, 62122), (698, 55180), (712, 54095), (890, 43276), (1240, 31061), (1396, 27590), (1745, 22072), (1780, 21638), (2759, 13960), (2792, 13795), (3490, 11036), (3560, 10819), (5518, 6980)]