20820784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1867}}^1$

素因数の和:1933

約数の個数: 40

約数和(自身を含む): 43778448

約数和(自身を除く): 22957664

約数列:

[1, 2, 4, 8, 16, 17, 34, 41, 68, 82, 136, 164, 272, 328, 656, 697, 1394, 1867, 2788, 3734, 5576, 7468, 11152, 14936, 29872, 31739, 63478, 76547, 126956, 153094, 253912, 306188, 507824, 612376, 1224752, 1301299, 2602598, 5205196, 10410392, 20820784]

約数ペア:

[(1, 20820784), (2, 10410392), (4, 5205196), (8, 2602598), (16, 1301299), (17, 1224752), (34, 612376), (41, 507824), (68, 306188), (82, 253912), (136, 153094), (164, 126956), (272, 76547), (328, 63478), (656, 31739), (697, 29872), (1394, 14936), (1867, 11152), (2788, 7468), (3734, 5576)]