28678240

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7793}}^1$

素因数の和:7831

約数の個数: 48

約数和(自身を含む): 70707168

約数和(自身を除く): 42028928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 7793, 15586, 31172, 38965, 62344, 77930, 124688, 155860, 179239, 249376, 311720, 358478, 623440, 716956, 896195, 1246880, 1433912, 1792390, 2867824, 3584780, 5735648, 7169560, 14339120, 28678240]

約数ペア:

[(1, 28678240), (2, 14339120), (4, 7169560), (5, 5735648), (8, 3584780), (10, 2867824), (16, 1792390), (20, 1433912), (23, 1246880), (32, 896195), (40, 716956), (46, 623440), (80, 358478), (92, 311720), (115, 249376), (160, 179239), (184, 155860), (230, 124688), (368, 77930), (460, 62344), (736, 38965), (920, 31172), (1840, 15586), (3680, 7793)]