20639648

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{967}}^1$

素因数の和:1029

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 23268832

約数列:

[1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 92, 116, 184, 232, 368, 464, 667, 736, 928, 967, 1334, 1934, 2668, 3868, 5336, 7736, 10672, 15472, 21344, 22241, 28043, 30944, 44482, 56086, 88964, 112172, 177928, 224344, 355856, 448688, 644989, 711712, 897376, 1289978, 2579956, 5159912, 10319824, 20639648]

約数ペア:

[(1, 20639648), (2, 10319824), (4, 5159912), (8, 2579956), (16, 1289978), (23, 897376), (29, 711712), (32, 644989), (46, 448688), (58, 355856), (92, 224344), (116, 177928), (184, 112172), (232, 88964), (368, 56086), (464, 44482), (667, 30944), (736, 28043), (928, 22241), (967, 21344), (1334, 15472), (1934, 10672), (2668, 7736), (3868, 5336)]