19756048

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4999}}^1$

素因数の和:5039

約数の個数: 40

約数和(自身を含む): 43400000

約数和(自身を除く): 23643952

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 4999, 9998, 19996, 39992, 64987, 79984, 94981, 129974, 189962, 259948, 379924, 519896, 759848, 1039792, 1234753, 1519696, 2469506, 4939012, 9878024, 19756048]

約数ペア:

[(1, 19756048), (2, 9878024), (4, 4939012), (8, 2469506), (13, 1519696), (16, 1234753), (19, 1039792), (26, 759848), (38, 519896), (52, 379924), (76, 259948), (104, 189962), (152, 129974), (208, 94981), (247, 79984), (304, 64987), (494, 39992), (988, 19996), (1976, 9998), (3952, 4999)]