21981096

素因数分解:

$2^3\times 3^2\times {\mathrm{397}}^1\times {\mathrm{769}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 59759700

約数和(自身を除く): 37778604

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 397, 769, 794, 1191, 1538, 1588, 2307, 2382, 3076, 3176, 3573, 4614, 4764, 6152, 6921, 7146, 9228, 9528, 13842, 14292, 18456, 27684, 28584, 55368, 305293, 610586, 915879, 1221172, 1831758, 2442344, 2747637, 3663516, 5495274, 7327032, 10990548, 21981096]

約数ペア:

[(1, 21981096), (2, 10990548), (3, 7327032), (4, 5495274), (6, 3663516), (8, 2747637), (9, 2442344), (12, 1831758), (18, 1221172), (24, 915879), (36, 610586), (72, 305293), (397, 55368), (769, 28584), (794, 27684), (1191, 18456), (1538, 14292), (1588, 13842), (2307, 9528), (2382, 9228), (3076, 7146), (3176, 6921), (3573, 6152), (4614, 4764)]