1780493220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{81749}}^1$

素因数の和:81786

約数の個数: 108

約数和(自身を含む): 5936521500

約数和(自身を除く): 4156028280

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 1089, 1210, 1452, 1815, 1980, 2178, 2420, 3630, 4356, 5445, 7260, 10890, 21780, 81749, 163498, 245247, 326996, 408745, 490494, 735741, 817490, 899239, 980988, 1226235, 1471482, 1634980, 1798478, 2452470, 2697717, 2942964, 3596956, 3678705, 4496195, 4904940, 5395434, 7357410, 8093151, 8992390, 9891629, 10790868, 13488585, 14714820, 16186302, 17984780, 19783258, 26977170, 29674887, 32372604, 39566516, 40465755, 49458145, 53954340, 59349774, 80931510, 89024661, 98916290, 118699548, 148374435, 161863020, 178049322, 197832580, 296748870, 356098644, 445123305, 593497740, 890246610, 1780493220]

約数ペア:

[(1, 1780493220), (2, 890246610), (3, 593497740), (4, 445123305), (5, 356098644), (6, 296748870), (9, 197832580), (10, 178049322), (11, 161863020), (12, 148374435), (15, 118699548), (18, 98916290), (20, 89024661), (22, 80931510), (30, 59349774), (33, 53954340), (36, 49458145), (44, 40465755), (45, 39566516), (55, 32372604), (60, 29674887), (66, 26977170), (90, 19783258), (99, 17984780), (110, 16186302), (121, 14714820), (132, 13488585), (165, 10790868), (180, 9891629), (198, 8992390), (220, 8093151), (242, 7357410), (330, 5395434), (363, 4904940), (396, 4496195), (484, 3678705), (495, 3596956), (605, 2942964), (660, 2697717), (726, 2452470), (990, 1798478), (1089, 1634980), (1210, 1471482), (1452, 1226235), (1815, 980988), (1980, 899239), (2178, 817490), (2420, 735741), (3630, 490494), (4356, 408745), (5445, 326996), (7260, 245247), (10890, 163498), (21780, 81749)]