28631988

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{313}}^1$

素因数の和:355

約数の個数: 144

約数和(自身を含む): 93546880

約数和(自身を除く): 64914892

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 42, 44, 54, 63, 66, 77, 84, 99, 108, 121, 126, 132, 154, 189, 198, 231, 242, 252, 297, 308, 313, 363, 378, 396, 462, 484, 594, 626, 693, 726, 756, 847, 924, 939, 1089, 1188, 1252, 1386, 1452, 1694, 1878, 2079, 2178, 2191, 2541, 2772, 2817, 3267, 3388, 3443, 3756, 4158, 4356, 4382, 5082, 5634, 6534, 6573, 6886, 7623, 8316, 8451, 8764, 10164, 10329, 11268, 13068, 13146, 13772, 15246, 16902, 19719, 20658, 22869, 24101, 26292, 30492, 30987, 33804, 37873, 39438, 41316, 45738, 48202, 59157, 61974, 72303, 75746, 78876, 91476, 92961, 96404, 113619, 118314, 123948, 144606, 151492, 185922, 216909, 227238, 236628, 265111, 289212, 340857, 371844, 433818, 454476, 530222, 650727, 681714, 795333, 867636, 1022571, 1060444, 1301454, 1363428, 1590666, 2045142, 2385999, 2602908, 3181332, 4090284, 4771998, 7157997, 9543996, 14315994, 28631988]

約数ペア:

[(1, 28631988), (2, 14315994), (3, 9543996), (4, 7157997), (6, 4771998), (7, 4090284), (9, 3181332), (11, 2602908), (12, 2385999), (14, 2045142), (18, 1590666), (21, 1363428), (22, 1301454), (27, 1060444), (28, 1022571), (33, 867636), (36, 795333), (42, 681714), (44, 650727), (54, 530222), (63, 454476), (66, 433818), (77, 371844), (84, 340857), (99, 289212), (108, 265111), (121, 236628), (126, 227238), (132, 216909), (154, 185922), (189, 151492), (198, 144606), (231, 123948), (242, 118314), (252, 113619), (297, 96404), (308, 92961), (313, 91476), (363, 78876), (378, 75746), (396, 72303), (462, 61974), (484, 59157), (594, 48202), (626, 45738), (693, 41316), (726, 39438), (756, 37873), (847, 33804), (924, 30987), (939, 30492), (1089, 26292), (1188, 24101), (1252, 22869), (1386, 20658), (1452, 19719), (1694, 16902), (1878, 15246), (2079, 13772), (2178, 13146), (2191, 13068), (2541, 11268), (2772, 10329), (2817, 10164), (3267, 8764), (3388, 8451), (3443, 8316), (3756, 7623), (4158, 6886), (4356, 6573), (4382, 6534), (5082, 5634)]