19934512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{401}}^1$

素因数の和:661

約数の個数: 40

約数和(自身を含む): 41872320

約数和(自身を除く): 21937808

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 239, 401, 478, 802, 956, 1604, 1912, 3107, 3208, 3824, 5213, 6214, 6416, 10426, 12428, 20852, 24856, 41704, 49712, 83408, 95839, 191678, 383356, 766712, 1245907, 1533424, 2491814, 4983628, 9967256, 19934512]

約数ペア:

[(1, 19934512), (2, 9967256), (4, 4983628), (8, 2491814), (13, 1533424), (16, 1245907), (26, 766712), (52, 383356), (104, 191678), (208, 95839), (239, 83408), (401, 49712), (478, 41704), (802, 24856), (956, 20852), (1604, 12428), (1912, 10426), (3107, 6416), (3208, 6214), (3824, 5213)]