21987331390

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{431}}^1\times {\mathrm{1619}}^1$

素因数の和:2217

約数の個数: 64

約数和(自身を含む): 41721661440

約数和(自身を除く): 19734330050

約数列:

[1, 2, 5, 10, 23, 46, 115, 137, 230, 274, 431, 685, 862, 1370, 1619, 2155, 3151, 3238, 4310, 6302, 8095, 9913, 15755, 16190, 19826, 31510, 37237, 49565, 59047, 74474, 99130, 118094, 186185, 221803, 295235, 372370, 443606, 590470, 697789, 1109015, 1358081, 1395578, 2218030, 2716162, 3488945, 5101469, 6790405, 6977890, 10202938, 13580810, 16049147, 25507345, 32098294, 51014690, 80245735, 95597093, 160491470, 191194186, 477985465, 955970930, 2198733139, 4397466278, 10993665695, 21987331390]

約数ペア:

[(1, 21987331390), (2, 10993665695), (5, 4397466278), (10, 2198733139), (23, 955970930), (46, 477985465), (115, 191194186), (137, 160491470), (230, 95597093), (274, 80245735), (431, 51014690), (685, 32098294), (862, 25507345), (1370, 16049147), (1619, 13580810), (2155, 10202938), (3151, 6977890), (3238, 6790405), (4310, 5101469), (6302, 3488945), (8095, 2716162), (9913, 2218030), (15755, 1395578), (16190, 1358081), (19826, 1109015), (31510, 697789), (37237, 590470), (49565, 443606), (59047, 372370), (74474, 295235), (99130, 221803), (118094, 186185)]