19968813440

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1356577}}^1$

素因数の和:1356619

約数の個数: 64

約数和(自身を含む): 49813544160

約数和(自身を除く): 29844730720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1472, 1840, 2944, 3680, 7360, 14720, 1356577, 2713154, 5426308, 6782885, 10852616, 13565770, 21705232, 27131540, 31201271, 43410464, 54263080, 62402542, 86820928, 108526160, 124805084, 156006355, 173641856, 217052320, 249610168, 312012710, 434104640, 499220336, 624025420, 868209280, 998440672, 1248050840, 1996881344, 2496101680, 3993762688, 4992203360, 9984406720, 19968813440]

約数ペア:

[(1, 19968813440), (2, 9984406720), (4, 4992203360), (5, 3993762688), (8, 2496101680), (10, 1996881344), (16, 1248050840), (20, 998440672), (23, 868209280), (32, 624025420), (40, 499220336), (46, 434104640), (64, 312012710), (80, 249610168), (92, 217052320), (115, 173641856), (128, 156006355), (160, 124805084), (184, 108526160), (230, 86820928), (320, 62402542), (368, 54263080), (460, 43410464), (640, 31201271), (736, 27131540), (920, 21705232), (1472, 13565770), (1840, 10852616), (2944, 6782885), (3680, 5426308), (7360, 2713154), (14720, 1356577)]