12785720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 30287520

約数和(自身を除く): 17501800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 163, 185, 212, 265, 296, 326, 370, 424, 530, 652, 740, 815, 1060, 1304, 1480, 1630, 1961, 2120, 3260, 3922, 6031, 6520, 7844, 8639, 9805, 12062, 15688, 17278, 19610, 24124, 30155, 34556, 39220, 43195, 48248, 60310, 69112, 78440, 86390, 120620, 172780, 241240, 319643, 345560, 639286, 1278572, 1598215, 2557144, 3196430, 6392860, 12785720]

約数ペア:

[(1, 12785720), (2, 6392860), (4, 3196430), (5, 2557144), (8, 1598215), (10, 1278572), (20, 639286), (37, 345560), (40, 319643), (53, 241240), (74, 172780), (106, 120620), (148, 86390), (163, 78440), (185, 69112), (212, 60310), (265, 48248), (296, 43195), (326, 39220), (370, 34556), (424, 30155), (530, 24124), (652, 19610), (740, 17278), (815, 15688), (1060, 12062), (1304, 9805), (1480, 8639), (1630, 7844), (1961, 6520), (2120, 6031), (3260, 3922)]