26981235

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 51571200

約数和(自身を除く): 24589965

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 67, 95, 135, 157, 171, 201, 285, 335, 471, 513, 603, 785, 855, 1005, 1273, 1413, 1809, 2355, 2565, 2983, 3015, 3819, 4239, 6365, 7065, 8949, 9045, 10519, 11457, 14915, 19095, 21195, 26847, 31557, 34371, 44745, 52595, 57285, 80541, 94671, 134235, 157785, 171855, 199861, 284013, 402705, 473355, 599583, 999305, 1420065, 1798749, 2997915, 5396247, 8993745, 26981235]

約数ペア:

[(1, 26981235), (3, 8993745), (5, 5396247), (9, 2997915), (15, 1798749), (19, 1420065), (27, 999305), (45, 599583), (57, 473355), (67, 402705), (95, 284013), (135, 199861), (157, 171855), (171, 157785), (201, 134235), (285, 94671), (335, 80541), (471, 57285), (513, 52595), (603, 44745), (785, 34371), (855, 31557), (1005, 26847), (1273, 21195), (1413, 19095), (1809, 14915), (2355, 11457), (2565, 10519), (2983, 9045), (3015, 8949), (3819, 7065), (4239, 6365)]