21532016

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 49282560

約数和(自身を除く): 27750544

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 47, 76, 88, 94, 137, 152, 176, 188, 209, 274, 304, 376, 418, 517, 548, 752, 836, 893, 1034, 1096, 1507, 1672, 1786, 2068, 2192, 2603, 3014, 3344, 3572, 4136, 5206, 6028, 6439, 7144, 8272, 9823, 10412, 12056, 12878, 14288, 19646, 20824, 24112, 25756, 28633, 39292, 41648, 51512, 57266, 70829, 78584, 103024, 114532, 122341, 141658, 157168, 229064, 244682, 283316, 458128, 489364, 566632, 978728, 1133264, 1345751, 1957456, 2691502, 5383004, 10766008, 21532016]

約数ペア:

[(1, 21532016), (2, 10766008), (4, 5383004), (8, 2691502), (11, 1957456), (16, 1345751), (19, 1133264), (22, 978728), (38, 566632), (44, 489364), (47, 458128), (76, 283316), (88, 244682), (94, 229064), (137, 157168), (152, 141658), (176, 122341), (188, 114532), (209, 103024), (274, 78584), (304, 70829), (376, 57266), (418, 51512), (517, 41648), (548, 39292), (752, 28633), (836, 25756), (893, 24112), (1034, 20824), (1096, 19646), (1507, 14288), (1672, 12878), (1786, 12056), (2068, 10412), (2192, 9823), (2603, 8272), (3014, 7144), (3344, 6439), (3572, 6028), (4136, 5206)]