400915984

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{50417}}^1$

素因数の和:50503

約数の個数: 40

約数和(自身を含む): 900263808

約数和(自身を除く): 499347824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 3976, 7952, 50417, 100834, 201668, 352919, 403336, 705838, 806672, 1411676, 2823352, 3579607, 5646704, 7159214, 14318428, 25057249, 28636856, 50114498, 57273712, 100228996, 200457992, 400915984]

約数ペア:

[(1, 400915984), (2, 200457992), (4, 100228996), (7, 57273712), (8, 50114498), (14, 28636856), (16, 25057249), (28, 14318428), (56, 7159214), (71, 5646704), (112, 3579607), (142, 2823352), (284, 1411676), (497, 806672), (568, 705838), (994, 403336), (1136, 352919), (1988, 201668), (3976, 100834), (7952, 50417)]