21205338

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:192

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 33952422

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 77, 79, 83, 98, 147, 154, 158, 166, 231, 237, 249, 294, 462, 474, 498, 539, 553, 581, 869, 913, 1078, 1106, 1162, 1617, 1659, 1738, 1743, 1826, 2607, 2739, 3234, 3318, 3486, 3871, 4067, 5214, 5478, 6083, 6391, 6557, 7742, 8134, 11613, 12166, 12201, 12782, 13114, 18249, 19173, 19671, 23226, 24402, 36498, 38346, 39342, 42581, 44737, 45899, 72127, 85162, 89474, 91798, 127743, 134211, 137697, 144254, 216381, 255486, 268422, 275394, 321293, 432762, 504889, 642586, 963879, 1009778, 1514667, 1927758, 3029334, 3534223, 7068446, 10602669, 21205338]

約数ペア:

[(1, 21205338), (2, 10602669), (3, 7068446), (6, 3534223), (7, 3029334), (11, 1927758), (14, 1514667), (21, 1009778), (22, 963879), (33, 642586), (42, 504889), (49, 432762), (66, 321293), (77, 275394), (79, 268422), (83, 255486), (98, 216381), (147, 144254), (154, 137697), (158, 134211), (166, 127743), (231, 91798), (237, 89474), (249, 85162), (294, 72127), (462, 45899), (474, 44737), (498, 42581), (539, 39342), (553, 38346), (581, 36498), (869, 24402), (913, 23226), (1078, 19671), (1106, 19173), (1162, 18249), (1617, 13114), (1659, 12782), (1738, 12201), (1743, 12166), (1826, 11613), (2607, 8134), (2739, 7742), (3234, 6557), (3318, 6391), (3486, 6083), (3871, 5478), (4067, 5214)]