20883280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1249}}^1$

素因数の和:1292

約数の個数: 80

約数和(自身を含む): 55800000

約数和(自身を除く): 34916720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1249, 1520, 1672, 2090, 2498, 3344, 4180, 4996, 6245, 8360, 9992, 12490, 13739, 16720, 19984, 23731, 24980, 27478, 47462, 49960, 54956, 68695, 94924, 99920, 109912, 118655, 137390, 189848, 219824, 237310, 261041, 274780, 379696, 474620, 522082, 549560, 949240, 1044164, 1099120, 1305205, 1898480, 2088328, 2610410, 4176656, 5220820, 10441640, 20883280]

約数ペア:

[(1, 20883280), (2, 10441640), (4, 5220820), (5, 4176656), (8, 2610410), (10, 2088328), (11, 1898480), (16, 1305205), (19, 1099120), (20, 1044164), (22, 949240), (38, 549560), (40, 522082), (44, 474620), (55, 379696), (76, 274780), (80, 261041), (88, 237310), (95, 219824), (110, 189848), (152, 137390), (176, 118655), (190, 109912), (209, 99920), (220, 94924), (304, 68695), (380, 54956), (418, 49960), (440, 47462), (760, 27478), (836, 24980), (880, 23731), (1045, 19984), (1249, 16720), (1520, 13739), (1672, 12490), (2090, 9992), (2498, 8360), (3344, 6245), (4180, 4996)]