20857572

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{197}}^1$

素因数の和:397

約数の個数: 72

約数和(自身を含む): 56432376

約数和(自身を除く): 35574804

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 173, 197, 204, 306, 346, 394, 519, 591, 612, 692, 788, 1038, 1182, 1557, 1773, 2076, 2364, 2941, 3114, 3349, 3546, 5882, 6228, 6698, 7092, 8823, 10047, 11764, 13396, 17646, 20094, 26469, 30141, 34081, 35292, 40188, 52938, 60282, 68162, 102243, 105876, 120564, 136324, 204486, 306729, 408972, 579377, 613458, 1158754, 1226916, 1738131, 2317508, 3476262, 5214393, 6952524, 10428786, 20857572]

約数ペア:

[(1, 20857572), (2, 10428786), (3, 6952524), (4, 5214393), (6, 3476262), (9, 2317508), (12, 1738131), (17, 1226916), (18, 1158754), (34, 613458), (36, 579377), (51, 408972), (68, 306729), (102, 204486), (153, 136324), (173, 120564), (197, 105876), (204, 102243), (306, 68162), (346, 60282), (394, 52938), (519, 40188), (591, 35292), (612, 34081), (692, 30141), (788, 26469), (1038, 20094), (1182, 17646), (1557, 13396), (1773, 11764), (2076, 10047), (2364, 8823), (2941, 7092), (3114, 6698), (3349, 6228), (3546, 5882)]