20540410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 42923520

約数和(自身を除く): 22383110

約数列:

[1, 2, 5, 10, 11, 22, 29, 47, 55, 58, 94, 110, 137, 145, 235, 274, 290, 319, 470, 517, 638, 685, 1034, 1363, 1370, 1507, 1595, 2585, 2726, 3014, 3190, 3973, 5170, 6439, 6815, 7535, 7946, 12878, 13630, 14993, 15070, 19865, 29986, 32195, 39730, 43703, 64390, 70829, 74965, 87406, 141658, 149930, 186731, 218515, 354145, 373462, 437030, 708290, 933655, 1867310, 2054041, 4108082, 10270205, 20540410]

約数ペア:

[(1, 20540410), (2, 10270205), (5, 4108082), (10, 2054041), (11, 1867310), (22, 933655), (29, 708290), (47, 437030), (55, 373462), (58, 354145), (94, 218515), (110, 186731), (137, 149930), (145, 141658), (235, 87406), (274, 74965), (290, 70829), (319, 64390), (470, 43703), (517, 39730), (638, 32195), (685, 29986), (1034, 19865), (1363, 15070), (1370, 14993), (1507, 13630), (1595, 12878), (2585, 7946), (2726, 7535), (3014, 6815), (3190, 6439), (3973, 5170)]