21682990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:194

約数の個数: 96

約数和(自身を含む): 50971680

約数和(自身を除く): 29288690

約数列:

[1, 2, 5, 7, 10, 14, 17, 19, 34, 35, 38, 49, 70, 85, 95, 98, 119, 133, 137, 170, 190, 238, 245, 266, 274, 323, 490, 595, 646, 665, 685, 833, 931, 959, 1190, 1330, 1370, 1615, 1666, 1862, 1918, 2261, 2329, 2603, 3230, 4165, 4522, 4655, 4658, 4795, 5206, 6713, 8330, 9310, 9590, 11305, 11645, 13015, 13426, 15827, 16303, 18221, 22610, 23290, 26030, 31654, 32606, 33565, 36442, 44251, 67130, 79135, 81515, 88502, 91105, 114121, 127547, 158270, 163030, 182210, 221255, 228242, 255094, 309757, 442510, 570605, 619514, 637735, 1141210, 1275470, 1548785, 2168299, 3097570, 4336598, 10841495, 21682990]

約数ペア:

[(1, 21682990), (2, 10841495), (5, 4336598), (7, 3097570), (10, 2168299), (14, 1548785), (17, 1275470), (19, 1141210), (34, 637735), (35, 619514), (38, 570605), (49, 442510), (70, 309757), (85, 255094), (95, 228242), (98, 221255), (119, 182210), (133, 163030), (137, 158270), (170, 127547), (190, 114121), (238, 91105), (245, 88502), (266, 81515), (274, 79135), (323, 67130), (490, 44251), (595, 36442), (646, 33565), (665, 32606), (685, 31654), (833, 26030), (931, 23290), (959, 22610), (1190, 18221), (1330, 16303), (1370, 15827), (1615, 13426), (1666, 13015), (1862, 11645), (1918, 11305), (2261, 9590), (2329, 9310), (2603, 8330), (3230, 6713), (4165, 5206), (4522, 4795), (4655, 4658)]