20664784

素因数分解:

$2^4\times 7^1\times {\mathrm{307}}^1\times {\mathrm{601}}^1$

素因数の和:923

約数の個数: 40

約数和(自身を含む): 45983168

約数和(自身を除く): 25318384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 307, 601, 614, 1202, 1228, 2149, 2404, 2456, 4207, 4298, 4808, 4912, 8414, 8596, 9616, 16828, 17192, 33656, 34384, 67312, 184507, 369014, 738028, 1291549, 1476056, 2583098, 2952112, 5166196, 10332392, 20664784]

約数ペア:

[(1, 20664784), (2, 10332392), (4, 5166196), (7, 2952112), (8, 2583098), (14, 1476056), (16, 1291549), (28, 738028), (56, 369014), (112, 184507), (307, 67312), (601, 34384), (614, 33656), (1202, 17192), (1228, 16828), (2149, 9616), (2404, 8596), (2456, 8414), (4207, 4912), (4298, 4808)]