2639140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2693}}^1$

素因数の和:2716

約数の個数: 36

約数和(自身を含む): 6449436

約数和(自身を除く): 3810296

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2693, 5386, 10772, 13465, 18851, 26930, 37702, 53860, 75404, 94255, 131957, 188510, 263914, 377020, 527828, 659785, 1319570, 2639140]

約数ペア:

[(1, 2639140), (2, 1319570), (4, 659785), (5, 527828), (7, 377020), (10, 263914), (14, 188510), (20, 131957), (28, 94255), (35, 75404), (49, 53860), (70, 37702), (98, 26930), (140, 18851), (196, 13465), (245, 10772), (490, 5386), (980, 2693)]