19887960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9749}}^1$

素因数の和:9780

約数の個数: 64

約数和(自身を含む): 63180000

約数和(自身を除く): 43292040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 9749, 19498, 29247, 38996, 48745, 58494, 77992, 97490, 116988, 146235, 165733, 194980, 233976, 292470, 331466, 389960, 497199, 584940, 662932, 828665, 994398, 1169880, 1325864, 1657330, 1988796, 2485995, 3314660, 3977592, 4971990, 6629320, 9943980, 19887960]

約数ペア:

[(1, 19887960), (2, 9943980), (3, 6629320), (4, 4971990), (5, 3977592), (6, 3314660), (8, 2485995), (10, 1988796), (12, 1657330), (15, 1325864), (17, 1169880), (20, 994398), (24, 828665), (30, 662932), (34, 584940), (40, 497199), (51, 389960), (60, 331466), (68, 292470), (85, 233976), (102, 194980), (120, 165733), (136, 146235), (170, 116988), (204, 97490), (255, 77992), (340, 58494), (408, 48745), (510, 38996), (680, 29247), (1020, 19498), (2040, 9749)]