21298021264

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1693}}^1\times {\mathrm{1951}}^1$

素因数の和:3696

約数の個数: 80

約数和(自身を含む): 45923282944

約数和(自身を除く): 24625261680

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 1693, 1951, 3224, 3386, 3902, 6448, 6772, 7804, 13544, 15608, 22009, 25363, 27088, 31216, 44018, 50726, 52483, 60481, 88036, 101452, 104966, 120962, 176072, 202904, 209932, 241924, 352144, 405808, 419864, 483848, 682279, 786253, 839728, 967696, 1364558, 1572506, 2729116, 3145012, 3303043, 5458232, 6290024, 6606086, 10916464, 12580048, 13212172, 26424344, 42939559, 52848688, 85879118, 102394333, 171758236, 204788666, 343516472, 409577332, 687032944, 819154664, 1331126329, 1638309328, 2662252658, 5324505316, 10649010632, 21298021264]

約数ペア:

[(1, 21298021264), (2, 10649010632), (4, 5324505316), (8, 2662252658), (13, 1638309328), (16, 1331126329), (26, 819154664), (31, 687032944), (52, 409577332), (62, 343516472), (104, 204788666), (124, 171758236), (208, 102394333), (248, 85879118), (403, 52848688), (496, 42939559), (806, 26424344), (1612, 13212172), (1693, 12580048), (1951, 10916464), (3224, 6606086), (3386, 6290024), (3902, 5458232), (6448, 3303043), (6772, 3145012), (7804, 2729116), (13544, 1572506), (15608, 1364558), (22009, 967696), (25363, 839728), (27088, 786253), (31216, 682279), (44018, 483848), (50726, 419864), (52483, 405808), (60481, 352144), (88036, 241924), (101452, 209932), (104966, 202904), (120962, 176072)]