21000772790

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1\times {\mathrm{433}}^1$

素因数の和:1077

約数の個数: 64

約数和(自身を含む): 38757519360

約数和(自身を除く): 17756746570

約数列:

[1, 2, 5, 10, 67, 134, 191, 335, 379, 382, 433, 670, 758, 866, 955, 1895, 1910, 2165, 3790, 4330, 12797, 25393, 25594, 29011, 50786, 58022, 63985, 72389, 82703, 126965, 127970, 144778, 145055, 164107, 165406, 253930, 290110, 328214, 361945, 413515, 723890, 820535, 827030, 1641070, 4850063, 5541101, 9700126, 10995169, 11082202, 21990338, 24250315, 27705505, 31344437, 48500630, 54975845, 55411010, 62688874, 109951690, 156722185, 313444370, 2100077279, 4200154558, 10500386395, 21000772790]

約数ペア:

[(1, 21000772790), (2, 10500386395), (5, 4200154558), (10, 2100077279), (67, 313444370), (134, 156722185), (191, 109951690), (335, 62688874), (379, 55411010), (382, 54975845), (433, 48500630), (670, 31344437), (758, 27705505), (866, 24250315), (955, 21990338), (1895, 11082202), (1910, 10995169), (2165, 9700126), (3790, 5541101), (4330, 4850063), (12797, 1641070), (25393, 827030), (25594, 820535), (29011, 723890), (50786, 413515), (58022, 361945), (63985, 328214), (72389, 290110), (82703, 253930), (126965, 165406), (127970, 164107), (144778, 145055)]