19501998010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{991}}^1$

素因数の和:1268

約数の個数: 128

約数和(自身を含む): 41140224000

約数和(自身を除く): 21638225990

約数列:

[1, 2, 5, 10, 11, 22, 29, 31, 55, 58, 62, 110, 145, 155, 199, 290, 310, 319, 341, 398, 638, 682, 899, 991, 995, 1595, 1705, 1798, 1982, 1990, 2189, 3190, 3410, 4378, 4495, 4955, 5771, 6169, 8990, 9889, 9910, 10901, 10945, 11542, 12338, 19778, 21802, 21890, 28739, 28855, 30721, 30845, 49445, 54505, 57478, 57710, 61442, 61690, 63481, 67859, 98890, 109010, 126962, 135718, 143695, 153605, 178901, 197209, 287390, 307210, 316129, 317405, 337931, 339295, 357802, 394418, 632258, 634810, 675862, 678590, 890909, 894505, 986045, 1580645, 1689655, 1781818, 1789010, 1967911, 1972090, 2169299, 3161290, 3379310, 3935822, 4338598, 4454545, 5719061, 6113479, 8909090, 9799999, 9839555, 10846495, 11438122, 12226958, 19599998, 19679110, 21692990, 28595305, 30567395, 48999995, 57190610, 61134790, 62909671, 67248269, 97999990, 125819342, 134496538, 177290891, 314548355, 336241345, 354581782, 629096710, 672482690, 886454455, 1772908910, 1950199801, 3900399602, 9750999005, 19501998010]

約数ペア:

[(1, 19501998010), (2, 9750999005), (5, 3900399602), (10, 1950199801), (11, 1772908910), (22, 886454455), (29, 672482690), (31, 629096710), (55, 354581782), (58, 336241345), (62, 314548355), (110, 177290891), (145, 134496538), (155, 125819342), (199, 97999990), (290, 67248269), (310, 62909671), (319, 61134790), (341, 57190610), (398, 48999995), (638, 30567395), (682, 28595305), (899, 21692990), (991, 19679110), (995, 19599998), (1595, 12226958), (1705, 11438122), (1798, 10846495), (1982, 9839555), (1990, 9799999), (2189, 8909090), (3190, 6113479), (3410, 5719061), (4378, 4454545), (4495, 4338598), (4955, 3935822), (5771, 3379310), (6169, 3161290), (8990, 2169299), (9889, 1972090), (9910, 1967911), (10901, 1789010), (10945, 1781818), (11542, 1689655), (12338, 1580645), (19778, 986045), (21802, 894505), (21890, 890909), (28739, 678590), (28855, 675862), (30721, 634810), (30845, 632258), (49445, 394418), (54505, 357802), (57478, 339295), (57710, 337931), (61442, 317405), (61690, 316129), (63481, 307210), (67859, 287390), (98890, 197209), (109010, 178901), (126962, 153605), (135718, 143695)]