20895965720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10661207}}^1$

素因数の和:10661232

約数の個数: 48

約数和(自身を含む): 54691997040

約数和(自身を除く): 33796031320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10661207, 21322414, 42644828, 53306035, 74628449, 85289656, 106612070, 149256898, 213224140, 298513796, 373142245, 426448280, 522399143, 597027592, 746284490, 1044798286, 1492568980, 2089596572, 2611995715, 2985137960, 4179193144, 5223991430, 10447982860, 20895965720]

約数ペア:

[(1, 20895965720), (2, 10447982860), (4, 5223991430), (5, 4179193144), (7, 2985137960), (8, 2611995715), (10, 2089596572), (14, 1492568980), (20, 1044798286), (28, 746284490), (35, 597027592), (40, 522399143), (49, 426448280), (56, 373142245), (70, 298513796), (98, 213224140), (140, 149256898), (196, 106612070), (245, 85289656), (280, 74628449), (392, 53306035), (490, 42644828), (980, 21322414), (1960, 10661207)]