15648940

素因数分解:

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

素因数の和:298

約数の個数: 48

約数和(自身を含む): 33997824

約数和(自身を除く): 18348884

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 127, 202, 244, 254, 305, 404, 505, 508, 610, 635, 1010, 1220, 1270, 2020, 2540, 6161, 7747, 12322, 12827, 15494, 24644, 25654, 30805, 30988, 38735, 51308, 61610, 64135, 77470, 123220, 128270, 154940, 256540, 782447, 1564894, 3129788, 3912235, 7824470, 15648940]

約数ペア:

[(1, 15648940), (2, 7824470), (4, 3912235), (5, 3129788), (10, 1564894), (20, 782447), (61, 256540), (101, 154940), (122, 128270), (127, 123220), (202, 77470), (244, 64135), (254, 61610), (305, 51308), (404, 38735), (505, 30988), (508, 30805), (610, 25654), (635, 24644), (1010, 15494), (1220, 12827), (1270, 12322), (2020, 7747), (2540, 6161)]