31297880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 72852480

約数和(自身を除く): 41554600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 101, 122, 127, 202, 244, 254, 305, 404, 488, 505, 508, 610, 635, 808, 1010, 1016, 1220, 1270, 2020, 2440, 2540, 4040, 5080, 6161, 7747, 12322, 12827, 15494, 24644, 25654, 30805, 30988, 38735, 49288, 51308, 61610, 61976, 64135, 77470, 102616, 123220, 128270, 154940, 246440, 256540, 309880, 513080, 782447, 1564894, 3129788, 3912235, 6259576, 7824470, 15648940, 31297880]

約数ペア:

[(1, 31297880), (2, 15648940), (4, 7824470), (5, 6259576), (8, 3912235), (10, 3129788), (20, 1564894), (40, 782447), (61, 513080), (101, 309880), (122, 256540), (127, 246440), (202, 154940), (244, 128270), (254, 123220), (305, 102616), (404, 77470), (488, 64135), (505, 61976), (508, 61610), (610, 51308), (635, 49288), (808, 38735), (1010, 30988), (1016, 30805), (1220, 25654), (1270, 24644), (2020, 15494), (2440, 12827), (2540, 12322), (4040, 7747), (5080, 6161)]