20198423080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{115631}}^1$

素因数の和:116050

約数の個数: 64

約数和(自身を含む): 49703258880

約数和(自身を除く): 29504835800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 397, 440, 794, 1588, 1985, 3176, 3970, 4367, 7940, 8734, 15880, 17468, 21835, 34936, 43670, 87340, 115631, 174680, 231262, 462524, 578155, 925048, 1156310, 1271941, 2312620, 2543882, 4625240, 5087764, 6359705, 10175528, 12719410, 25438820, 45905507, 50877640, 91811014, 183622028, 229527535, 367244056, 459055070, 504960577, 918110140, 1009921154, 1836220280, 2019842308, 2524802885, 4039684616, 5049605770, 10099211540, 20198423080]

約数ペア:

[(1, 20198423080), (2, 10099211540), (4, 5049605770), (5, 4039684616), (8, 2524802885), (10, 2019842308), (11, 1836220280), (20, 1009921154), (22, 918110140), (40, 504960577), (44, 459055070), (55, 367244056), (88, 229527535), (110, 183622028), (220, 91811014), (397, 50877640), (440, 45905507), (794, 25438820), (1588, 12719410), (1985, 10175528), (3176, 6359705), (3970, 5087764), (4367, 4625240), (7940, 2543882), (8734, 2312620), (15880, 1271941), (17468, 1156310), (21835, 925048), (34936, 578155), (43670, 462524), (87340, 231262), (115631, 174680)]