20721109216

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{709}}^1\times {\mathrm{39709}}^1$

素因数の和:40451

約数の個数: 48

約数和(自身を含む): 42629479200

約数和(自身を除く): 21908369984

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 92, 184, 368, 709, 736, 1418, 2836, 5672, 11344, 16307, 22688, 32614, 39709, 65228, 79418, 130456, 158836, 260912, 317672, 521824, 635344, 913307, 1270688, 1826614, 3653228, 7306456, 14612912, 28153681, 29225824, 56307362, 112614724, 225229448, 450458896, 647534663, 900917792, 1295069326, 2590138652, 5180277304, 10360554608, 20721109216]

約数ペア:

[(1, 20721109216), (2, 10360554608), (4, 5180277304), (8, 2590138652), (16, 1295069326), (23, 900917792), (32, 647534663), (46, 450458896), (92, 225229448), (184, 112614724), (368, 56307362), (709, 29225824), (736, 28153681), (1418, 14612912), (2836, 7306456), (5672, 3653228), (11344, 1826614), (16307, 1270688), (22688, 913307), (32614, 635344), (39709, 521824), (65228, 317672), (79418, 260912), (130456, 158836)]