21000598832

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{4421}}^1$

素因数の和:4678

約数の個数: 80

約数和(自身を含む): 42971368704

約数和(自身を除く): 21970769872

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 157, 244, 248, 314, 488, 496, 628, 976, 1256, 1891, 2512, 3782, 4421, 4867, 7564, 8842, 9577, 9734, 15128, 17684, 19154, 19468, 30256, 35368, 38308, 38936, 70736, 76616, 77872, 137051, 153232, 269681, 274102, 296887, 539362, 548204, 593774, 694097, 1078724, 1096408, 1187548, 1388194, 2157448, 2192816, 2375096, 2776388, 4314896, 4750192, 5552776, 8360111, 11105552, 16720222, 21517007, 33440444, 42339917, 43034014, 66880888, 84679834, 86068028, 133761776, 169359668, 172136056, 338719336, 344272112, 677438672, 1312537427, 2625074854, 5250149708, 10500299416, 21000598832]

約数ペア:

[(1, 21000598832), (2, 10500299416), (4, 5250149708), (8, 2625074854), (16, 1312537427), (31, 677438672), (61, 344272112), (62, 338719336), (122, 172136056), (124, 169359668), (157, 133761776), (244, 86068028), (248, 84679834), (314, 66880888), (488, 43034014), (496, 42339917), (628, 33440444), (976, 21517007), (1256, 16720222), (1891, 11105552), (2512, 8360111), (3782, 5552776), (4421, 4750192), (4867, 4314896), (7564, 2776388), (8842, 2375096), (9577, 2192816), (9734, 2157448), (15128, 1388194), (17684, 1187548), (19154, 1096408), (19468, 1078724), (30256, 694097), (35368, 593774), (38308, 548204), (38936, 539362), (70736, 296887), (76616, 274102), (77872, 269681), (137051, 153232)]