21560988

素因数分解:

$2^2\times 3^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 51650816

約数和(自身を除く): 30089828

約数列:

[1, 2, 3, 4, 6, 12, 73, 146, 151, 163, 219, 292, 302, 326, 438, 453, 489, 604, 652, 876, 906, 978, 1812, 1956, 11023, 11899, 22046, 23798, 24613, 33069, 35697, 44092, 47596, 49226, 66138, 71394, 73839, 98452, 132276, 142788, 147678, 295356, 1796749, 3593498, 5390247, 7186996, 10780494, 21560988]

約数ペア:

[(1, 21560988), (2, 10780494), (3, 7186996), (4, 5390247), (6, 3593498), (12, 1796749), (73, 295356), (146, 147678), (151, 142788), (163, 132276), (219, 98452), (292, 73839), (302, 71394), (326, 66138), (438, 49226), (453, 47596), (489, 44092), (604, 35697), (652, 33069), (876, 24613), (906, 23798), (978, 22046), (1812, 11899), (1956, 11023)]