20018988

素因数分解:

$2^2\times 3^4\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:205

約数の個数: 120

約数和(自身を含む): 58910544

約数和(自身を除く): 38891556

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 41, 44, 54, 66, 81, 82, 99, 108, 123, 132, 137, 162, 164, 198, 246, 274, 297, 324, 369, 396, 411, 451, 492, 548, 594, 738, 822, 891, 902, 1107, 1188, 1233, 1353, 1476, 1507, 1644, 1782, 1804, 2214, 2466, 2706, 3014, 3321, 3564, 3699, 4059, 4428, 4521, 4932, 5412, 5617, 6028, 6642, 7398, 8118, 9042, 11097, 11234, 12177, 13284, 13563, 14796, 16236, 16851, 18084, 22194, 22468, 24354, 27126, 33702, 36531, 40689, 44388, 48708, 50553, 54252, 61787, 67404, 73062, 81378, 101106, 122067, 123574, 146124, 151659, 162756, 185361, 202212, 244134, 247148, 303318, 370722, 454977, 488268, 556083, 606636, 741444, 909954, 1112166, 1668249, 1819908, 2224332, 3336498, 5004747, 6672996, 10009494, 20018988]

約数ペア:

[(1, 20018988), (2, 10009494), (3, 6672996), (4, 5004747), (6, 3336498), (9, 2224332), (11, 1819908), (12, 1668249), (18, 1112166), (22, 909954), (27, 741444), (33, 606636), (36, 556083), (41, 488268), (44, 454977), (54, 370722), (66, 303318), (81, 247148), (82, 244134), (99, 202212), (108, 185361), (123, 162756), (132, 151659), (137, 146124), (162, 123574), (164, 122067), (198, 101106), (246, 81378), (274, 73062), (297, 67404), (324, 61787), (369, 54252), (396, 50553), (411, 48708), (451, 44388), (492, 40689), (548, 36531), (594, 33702), (738, 27126), (822, 24354), (891, 22468), (902, 22194), (1107, 18084), (1188, 16851), (1233, 16236), (1353, 14796), (1476, 13563), (1507, 13284), (1644, 12177), (1782, 11234), (1804, 11097), (2214, 9042), (2466, 8118), (2706, 7398), (3014, 6642), (3321, 6028), (3564, 5617), (3699, 5412), (4059, 4932), (4428, 4521)]