20571104

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:363

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 21885856

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 89, 124, 178, 233, 248, 356, 466, 496, 712, 932, 992, 1424, 1864, 2759, 2848, 3728, 5518, 7223, 7456, 11036, 14446, 20737, 22072, 28892, 41474, 44144, 57784, 82948, 88288, 115568, 165896, 231136, 331792, 642847, 663584, 1285694, 2571388, 5142776, 10285552, 20571104]

約数ペア:

[(1, 20571104), (2, 10285552), (4, 5142776), (8, 2571388), (16, 1285694), (31, 663584), (32, 642847), (62, 331792), (89, 231136), (124, 165896), (178, 115568), (233, 88288), (248, 82948), (356, 57784), (466, 44144), (496, 41474), (712, 28892), (932, 22072), (992, 20737), (1424, 14446), (1864, 11036), (2759, 7456), (2848, 7223), (3728, 5518)]