80011120

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20411}}^1$

素因数の和:20438

約数の個数: 60

約数和(自身を含む): 216408024

約数和(自身を除く): 136396904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20411, 40822, 81644, 102055, 142877, 163288, 204110, 285754, 326576, 408220, 571508, 714385, 816440, 1000139, 1143016, 1428770, 1632880, 2000278, 2286032, 2857540, 4000556, 5000695, 5715080, 8001112, 10001390, 11430160, 16002224, 20002780, 40005560, 80011120]

約数ペア:

[(1, 80011120), (2, 40005560), (4, 20002780), (5, 16002224), (7, 11430160), (8, 10001390), (10, 8001112), (14, 5715080), (16, 5000695), (20, 4000556), (28, 2857540), (35, 2286032), (40, 2000278), (49, 1632880), (56, 1428770), (70, 1143016), (80, 1000139), (98, 816440), (112, 714385), (140, 571508), (196, 408220), (245, 326576), (280, 285754), (392, 204110), (490, 163288), (560, 142877), (784, 102055), (980, 81644), (1960, 40822), (3920, 20411)]