81063920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144757}}^1$

素因数の和:144777

約数の個数: 40

約数和(自身を含む): 215399904

約数和(自身を除く): 134335984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144757, 289514, 579028, 723785, 1013299, 1158056, 1447570, 2026598, 2316112, 2895140, 4053196, 5066495, 5790280, 8106392, 10132990, 11580560, 16212784, 20265980, 40531960, 81063920]

約数ペア:

[(1, 81063920), (2, 40531960), (4, 20265980), (5, 16212784), (7, 11580560), (8, 10132990), (10, 8106392), (14, 5790280), (16, 5066495), (20, 4053196), (28, 2895140), (35, 2316112), (40, 2026598), (56, 1447570), (70, 1158056), (80, 1013299), (112, 723785), (140, 579028), (280, 289514), (560, 144757)]