28678540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2137}}^1$

素因数の和:2218

約数の個数: 48

約数和(自身を含む): 66808224

約数和(自身を除く): 38129684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2137, 2684, 3355, 4274, 6710, 8548, 10685, 13420, 21370, 23507, 42740, 47014, 94028, 117535, 130357, 235070, 260714, 470140, 521428, 651785, 1303570, 1433927, 2607140, 2867854, 5735708, 7169635, 14339270, 28678540]

約数ペア:

[(1, 28678540), (2, 14339270), (4, 7169635), (5, 5735708), (10, 2867854), (11, 2607140), (20, 1433927), (22, 1303570), (44, 651785), (55, 521428), (61, 470140), (110, 260714), (122, 235070), (220, 130357), (244, 117535), (305, 94028), (610, 47014), (671, 42740), (1220, 23507), (1342, 21370), (2137, 13420), (2684, 10685), (3355, 8548), (4274, 6710)]