28920970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 57249720

約数和(自身を除く): 28328750

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 157, 169, 218, 314, 338, 545, 785, 845, 1090, 1417, 1570, 1690, 2041, 2834, 4082, 7085, 10205, 14170, 17113, 18421, 20410, 26533, 34226, 36842, 53066, 85565, 92105, 132665, 171130, 184210, 222469, 265330, 444938, 1112345, 2224690, 2892097, 5784194, 14460485, 28920970]

約数ペア:

[(1, 28920970), (2, 14460485), (5, 5784194), (10, 2892097), (13, 2224690), (26, 1112345), (65, 444938), (109, 265330), (130, 222469), (157, 184210), (169, 171130), (218, 132665), (314, 92105), (338, 85565), (545, 53066), (785, 36842), (845, 34226), (1090, 26533), (1417, 20410), (1570, 18421), (1690, 17113), (2041, 14170), (2834, 10205), (4082, 7085)]