21347716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:125

約数の個数: 96

約数和(自身を含む): 47416320

約数和(自身を除く): 26068604

約数列:

[1, 2, 4, 13, 17, 19, 26, 31, 34, 38, 41, 52, 62, 68, 76, 82, 124, 164, 221, 247, 323, 403, 442, 494, 527, 533, 589, 646, 697, 779, 806, 884, 988, 1054, 1066, 1178, 1271, 1292, 1394, 1558, 1612, 2108, 2132, 2356, 2542, 2788, 3116, 4199, 5084, 6851, 7657, 8398, 9061, 10013, 10127, 13243, 13702, 15314, 16523, 16796, 18122, 20026, 20254, 21607, 24149, 26486, 27404, 30628, 33046, 36244, 40052, 40508, 43214, 48298, 52972, 66092, 86428, 96596, 130169, 172159, 260338, 280891, 313937, 344318, 410533, 520676, 561782, 627874, 688636, 821066, 1123564, 1255748, 1642132, 5336929, 10673858, 21347716]

約数ペア:

[(1, 21347716), (2, 10673858), (4, 5336929), (13, 1642132), (17, 1255748), (19, 1123564), (26, 821066), (31, 688636), (34, 627874), (38, 561782), (41, 520676), (52, 410533), (62, 344318), (68, 313937), (76, 280891), (82, 260338), (124, 172159), (164, 130169), (221, 96596), (247, 86428), (323, 66092), (403, 52972), (442, 48298), (494, 43214), (527, 40508), (533, 40052), (589, 36244), (646, 33046), (697, 30628), (779, 27404), (806, 26486), (884, 24149), (988, 21607), (1054, 20254), (1066, 20026), (1178, 18122), (1271, 16796), (1292, 16523), (1394, 15314), (1558, 13702), (1612, 13243), (2108, 10127), (2132, 10013), (2356, 9061), (2542, 8398), (2788, 7657), (3116, 6851), (4199, 5084)]