21752860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{467}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 48825504

約数和(自身を除く): 27072644

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 340, 467, 548, 685, 934, 1370, 1868, 2329, 2335, 2740, 4658, 4670, 7939, 9316, 9340, 11645, 15878, 23290, 31756, 39695, 46580, 63979, 79390, 127958, 158780, 255916, 319895, 639790, 1087643, 1279580, 2175286, 4350572, 5438215, 10876430, 21752860]

約数ペア:

[(1, 21752860), (2, 10876430), (4, 5438215), (5, 4350572), (10, 2175286), (17, 1279580), (20, 1087643), (34, 639790), (68, 319895), (85, 255916), (137, 158780), (170, 127958), (274, 79390), (340, 63979), (467, 46580), (548, 39695), (685, 31756), (934, 23290), (1370, 15878), (1868, 11645), (2329, 9340), (2335, 9316), (2740, 7939), (4658, 4670)]