20347280

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1523}}^1$

素因数の和:1703

約数の個数: 40

約数和(自身を含む): 47621952

約数和(自身を除く): 27274672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1523, 1670, 2672, 3046, 3340, 6092, 6680, 7615, 12184, 13360, 15230, 24368, 30460, 60920, 121840, 254341, 508682, 1017364, 1271705, 2034728, 2543410, 4069456, 5086820, 10173640, 20347280]

約数ペア:

[(1, 20347280), (2, 10173640), (4, 5086820), (5, 4069456), (8, 2543410), (10, 2034728), (16, 1271705), (20, 1017364), (40, 508682), (80, 254341), (167, 121840), (334, 60920), (668, 30460), (835, 24368), (1336, 15230), (1523, 13360), (1670, 12184), (2672, 7615), (3046, 6680), (3340, 6092)]