20114840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3203}}^1$

素因数の和:3371

約数の個数: 32

約数和(自身を含む): 45560880

約数和(自身を除く): 25446040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 3203, 6280, 6406, 12812, 16015, 25624, 32030, 64060, 128120, 502871, 1005742, 2011484, 2514355, 4022968, 5028710, 10057420, 20114840]

約数ペア:

[(1, 20114840), (2, 10057420), (4, 5028710), (5, 4022968), (8, 2514355), (10, 2011484), (20, 1005742), (40, 502871), (157, 128120), (314, 64060), (628, 32030), (785, 25624), (1256, 16015), (1570, 12812), (3140, 6406), (3203, 6280)]