20997482008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{997}}^1\times {\mathrm{1091}}^1$

素因数の和:2240

約数の個数: 64

約数和(自身を含む): 41848934400

約数和(自身を除く): 20851452392

約数列:

[1, 2, 4, 8, 19, 38, 76, 127, 152, 254, 508, 997, 1016, 1091, 1994, 2182, 2413, 3988, 4364, 4826, 7976, 8728, 9652, 18943, 19304, 20729, 37886, 41458, 75772, 82916, 126619, 138557, 151544, 165832, 253238, 277114, 506476, 554228, 1012952, 1087727, 1108456, 2175454, 2405761, 2632583, 4350908, 4811522, 5265166, 8701816, 9623044, 10530332, 19246088, 20666813, 21060664, 41333626, 82667252, 138141329, 165334504, 276282658, 552565316, 1105130632, 2624685251, 5249370502, 10498741004, 20997482008]

約数ペア:

[(1, 20997482008), (2, 10498741004), (4, 5249370502), (8, 2624685251), (19, 1105130632), (38, 552565316), (76, 276282658), (127, 165334504), (152, 138141329), (254, 82667252), (508, 41333626), (997, 21060664), (1016, 20666813), (1091, 19246088), (1994, 10530332), (2182, 9623044), (2413, 8701816), (3988, 5265166), (4364, 4811522), (4826, 4350908), (7976, 2632583), (8728, 2405761), (9652, 2175454), (18943, 1108456), (19304, 1087727), (20729, 1012952), (37886, 554228), (41458, 506476), (75772, 277114), (82916, 253238), (126619, 165832), (138557, 151544)]