21379696

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 26742224

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 41, 46, 52, 82, 92, 104, 109, 164, 184, 208, 218, 299, 328, 368, 436, 533, 598, 656, 872, 943, 1066, 1196, 1417, 1744, 1886, 2132, 2392, 2507, 2834, 3772, 4264, 4469, 4784, 5014, 5668, 7544, 8528, 8938, 10028, 11336, 12259, 15088, 17876, 20056, 22672, 24518, 32591, 35752, 40112, 49036, 58097, 65182, 71504, 98072, 102787, 116194, 130364, 196144, 205574, 232388, 260728, 411148, 464776, 521456, 822296, 929552, 1336231, 1644592, 2672462, 5344924, 10689848, 21379696]

約数ペア:

[(1, 21379696), (2, 10689848), (4, 5344924), (8, 2672462), (13, 1644592), (16, 1336231), (23, 929552), (26, 822296), (41, 521456), (46, 464776), (52, 411148), (82, 260728), (92, 232388), (104, 205574), (109, 196144), (164, 130364), (184, 116194), (208, 102787), (218, 98072), (299, 71504), (328, 65182), (368, 58097), (436, 49036), (533, 40112), (598, 35752), (656, 32591), (872, 24518), (943, 22672), (1066, 20056), (1196, 17876), (1417, 15088), (1744, 12259), (1886, 11336), (2132, 10028), (2392, 8938), (2507, 8528), (2834, 7544), (3772, 5668), (4264, 5014), (4469, 4784)]