28790440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:459

約数の個数: 96

約数和(自身を含む): 77586120

約数和(自身を除く): 48795680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 49, 56, 70, 74, 98, 140, 148, 185, 196, 245, 259, 280, 296, 370, 392, 397, 490, 518, 740, 794, 980, 1036, 1295, 1480, 1588, 1813, 1960, 1985, 2072, 2590, 2779, 3176, 3626, 3970, 5180, 5558, 7252, 7940, 9065, 10360, 11116, 13895, 14504, 14689, 15880, 18130, 19453, 22232, 27790, 29378, 36260, 38906, 55580, 58756, 72520, 73445, 77812, 97265, 102823, 111160, 117512, 146890, 155624, 194530, 205646, 293780, 389060, 411292, 514115, 587560, 719761, 778120, 822584, 1028230, 1439522, 2056460, 2879044, 3598805, 4112920, 5758088, 7197610, 14395220, 28790440]

約数ペア:

[(1, 28790440), (2, 14395220), (4, 7197610), (5, 5758088), (7, 4112920), (8, 3598805), (10, 2879044), (14, 2056460), (20, 1439522), (28, 1028230), (35, 822584), (37, 778120), (40, 719761), (49, 587560), (56, 514115), (70, 411292), (74, 389060), (98, 293780), (140, 205646), (148, 194530), (185, 155624), (196, 146890), (245, 117512), (259, 111160), (280, 102823), (296, 97265), (370, 77812), (392, 73445), (397, 72520), (490, 58756), (518, 55580), (740, 38906), (794, 36260), (980, 29378), (1036, 27790), (1295, 22232), (1480, 19453), (1588, 18130), (1813, 15880), (1960, 14689), (1985, 14504), (2072, 13895), (2590, 11116), (2779, 10360), (3176, 9065), (3626, 7940), (3970, 7252), (5180, 5558)]