18885088

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 39690000

約数和(自身を除く): 20804912

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 89, 152, 178, 304, 349, 356, 608, 698, 712, 1396, 1424, 1691, 2792, 2848, 3382, 5584, 6631, 6764, 11168, 13262, 13528, 26524, 27056, 31061, 53048, 54112, 62122, 106096, 124244, 212192, 248488, 496976, 590159, 993952, 1180318, 2360636, 4721272, 9442544, 18885088]

約数ペア:

[(1, 18885088), (2, 9442544), (4, 4721272), (8, 2360636), (16, 1180318), (19, 993952), (32, 590159), (38, 496976), (76, 248488), (89, 212192), (152, 124244), (178, 106096), (304, 62122), (349, 54112), (356, 53048), (608, 31061), (698, 27056), (712, 26524), (1396, 13528), (1424, 13262), (1691, 11168), (2792, 6764), (2848, 6631), (3382, 5584)]