21805212

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 60850944

約数和(自身を除く): 39045732

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 22, 26, 33, 39, 44, 52, 66, 78, 97, 131, 132, 143, 156, 194, 262, 286, 291, 388, 393, 429, 524, 572, 582, 786, 858, 1067, 1164, 1261, 1441, 1572, 1703, 1716, 2134, 2522, 2882, 3201, 3406, 3783, 4268, 4323, 5044, 5109, 5764, 6402, 6812, 7566, 8646, 10218, 12707, 12804, 13871, 15132, 17292, 18733, 20436, 25414, 27742, 37466, 38121, 41613, 50828, 55484, 56199, 74932, 76242, 83226, 112398, 139777, 152484, 165191, 166452, 224796, 279554, 330382, 419331, 495573, 559108, 660764, 838662, 991146, 1677324, 1817101, 1982292, 3634202, 5451303, 7268404, 10902606, 21805212]

約数ペア:

[(1, 21805212), (2, 10902606), (3, 7268404), (4, 5451303), (6, 3634202), (11, 1982292), (12, 1817101), (13, 1677324), (22, 991146), (26, 838662), (33, 660764), (39, 559108), (44, 495573), (52, 419331), (66, 330382), (78, 279554), (97, 224796), (131, 166452), (132, 165191), (143, 152484), (156, 139777), (194, 112398), (262, 83226), (286, 76242), (291, 74932), (388, 56199), (393, 55484), (429, 50828), (524, 41613), (572, 38121), (582, 37466), (786, 27742), (858, 25414), (1067, 20436), (1164, 18733), (1261, 17292), (1441, 15132), (1572, 13871), (1703, 12804), (1716, 12707), (2134, 10218), (2522, 8646), (2882, 7566), (3201, 6812), (3406, 6402), (3783, 5764), (4268, 5109), (4323, 5044)]