278455920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:663

約数の個数: 160

約数和(自身を含む): 922440960

約数和(自身を除く): 643985040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 139, 170, 204, 240, 255, 272, 278, 340, 408, 417, 491, 510, 556, 680, 695, 816, 834, 982, 1020, 1112, 1360, 1390, 1473, 1668, 1964, 2040, 2085, 2224, 2363, 2455, 2780, 2946, 3336, 3928, 4080, 4170, 4726, 4910, 5560, 5892, 6672, 7089, 7365, 7856, 8340, 8347, 9452, 9820, 11120, 11784, 11815, 14178, 14730, 16680, 16694, 18904, 19640, 23568, 23630, 25041, 28356, 29460, 33360, 33388, 35445, 37808, 39280, 41735, 47260, 50082, 56712, 58920, 66776, 68249, 70890, 83470, 94520, 100164, 113424, 117840, 125205, 133552, 136498, 141780, 166940, 189040, 200328, 204747, 250410, 272996, 283560, 333880, 341245, 400656, 409494, 500820, 545992, 567120, 667760, 682490, 818988, 1001640, 1023735, 1091984, 1160233, 1364980, 1637976, 2003280, 2047470, 2320466, 2729960, 3275952, 3480699, 4094940, 4640932, 5459920, 5801165, 6961398, 8189880, 9281864, 11602330, 13922796, 16379760, 17403495, 18563728, 23204660, 27845592, 34806990, 46409320, 55691184, 69613980, 92818640, 139227960, 278455920]

約数ペア:

[(1, 278455920), (2, 139227960), (3, 92818640), (4, 69613980), (5, 55691184), (6, 46409320), (8, 34806990), (10, 27845592), (12, 23204660), (15, 18563728), (16, 17403495), (17, 16379760), (20, 13922796), (24, 11602330), (30, 9281864), (34, 8189880), (40, 6961398), (48, 5801165), (51, 5459920), (60, 4640932), (68, 4094940), (80, 3480699), (85, 3275952), (102, 2729960), (120, 2320466), (136, 2047470), (139, 2003280), (170, 1637976), (204, 1364980), (240, 1160233), (255, 1091984), (272, 1023735), (278, 1001640), (340, 818988), (408, 682490), (417, 667760), (491, 567120), (510, 545992), (556, 500820), (680, 409494), (695, 400656), (816, 341245), (834, 333880), (982, 283560), (1020, 272996), (1112, 250410), (1360, 204747), (1390, 200328), (1473, 189040), (1668, 166940), (1964, 141780), (2040, 136498), (2085, 133552), (2224, 125205), (2363, 117840), (2455, 113424), (2780, 100164), (2946, 94520), (3336, 83470), (3928, 70890), (4080, 68249), (4170, 66776), (4726, 58920), (4910, 56712), (5560, 50082), (5892, 47260), (6672, 41735), (7089, 39280), (7365, 37808), (7856, 35445), (8340, 33388), (8347, 33360), (9452, 29460), (9820, 28356), (11120, 25041), (11784, 23630), (11815, 23568), (14178, 19640), (14730, 18904), (16680, 16694)]