20333720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1249}}^1$

素因数の和:1308

約数の個数: 64

約数和(自身を含む): 51300000

約数和(自身を除く): 30966280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1249, 1480, 1628, 2035, 2498, 3256, 4070, 4996, 6245, 8140, 9992, 12490, 13739, 16280, 24980, 27478, 46213, 49960, 54956, 68695, 92426, 109912, 137390, 184852, 231065, 274780, 369704, 462130, 508343, 549560, 924260, 1016686, 1848520, 2033372, 2541715, 4066744, 5083430, 10166860, 20333720]

約数ペア:

[(1, 20333720), (2, 10166860), (4, 5083430), (5, 4066744), (8, 2541715), (10, 2033372), (11, 1848520), (20, 1016686), (22, 924260), (37, 549560), (40, 508343), (44, 462130), (55, 369704), (74, 274780), (88, 231065), (110, 184852), (148, 137390), (185, 109912), (220, 92426), (296, 68695), (370, 54956), (407, 49960), (440, 46213), (740, 27478), (814, 24980), (1249, 16280), (1480, 13739), (1628, 12490), (2035, 9992), (2498, 8140), (3256, 6245), (4070, 4996)]