20921937192016

素因数分解:

$2^4\times 7^1\times {\mathrm{367}}^1\times {\mathrm{929}}^1\times {\mathrm{547901}}^1$

素因数の和:549212

約数の個数: 80

約数和(自身を含む): 46503467159040

約数和(自身を除く): 25581529967024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 367, 734, 929, 1468, 1858, 2569, 2936, 3716, 5138, 5872, 6503, 7432, 10276, 13006, 14864, 20552, 26012, 41104, 52024, 104048, 340943, 547901, 681886, 1095802, 1363772, 2191604, 2386601, 2727544, 3835307, 4383208, 4773202, 5455088, 7670614, 8766416, 9546404, 15341228, 19092808, 30682456, 38185616, 61364912, 201079667, 402159334, 509000029, 804318668, 1018000058, 1407557669, 1608637336, 2036000116, 2815115338, 3217274672, 3563000203, 4072000232, 5630230676, 7126000406, 8144000464, 11260461352, 14252000812, 22520922704, 28504001624, 57008003248, 186803010643, 373606021286, 747212042572, 1307621074501, 1494424085144, 2615242149002, 2988848170288, 5230484298004, 10460968596008, 20921937192016]

約数ペア:

[(1, 20921937192016), (2, 10460968596008), (4, 5230484298004), (7, 2988848170288), (8, 2615242149002), (14, 1494424085144), (16, 1307621074501), (28, 747212042572), (56, 373606021286), (112, 186803010643), (367, 57008003248), (734, 28504001624), (929, 22520922704), (1468, 14252000812), (1858, 11260461352), (2569, 8144000464), (2936, 7126000406), (3716, 5630230676), (5138, 4072000232), (5872, 3563000203), (6503, 3217274672), (7432, 2815115338), (10276, 2036000116), (13006, 1608637336), (14864, 1407557669), (20552, 1018000058), (26012, 804318668), (41104, 509000029), (52024, 402159334), (104048, 201079667), (340943, 61364912), (547901, 38185616), (681886, 30682456), (1095802, 19092808), (1363772, 15341228), (2191604, 9546404), (2386601, 8766416), (2727544, 7670614), (3835307, 5455088), (4383208, 4773202)]