21503628

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 35105652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 71, 94, 141, 142, 179, 188, 213, 282, 284, 358, 423, 426, 537, 564, 639, 716, 846, 852, 1074, 1278, 1611, 1692, 2148, 2556, 3222, 3337, 6444, 6674, 8413, 10011, 12709, 13348, 16826, 20022, 25239, 25418, 30033, 33652, 38127, 40044, 50478, 50836, 60066, 75717, 76254, 100956, 114381, 120132, 151434, 152508, 228762, 302868, 457524, 597323, 1194646, 1791969, 2389292, 3583938, 5375907, 7167876, 10751814, 21503628]

約数ペア:

[(1, 21503628), (2, 10751814), (3, 7167876), (4, 5375907), (6, 3583938), (9, 2389292), (12, 1791969), (18, 1194646), (36, 597323), (47, 457524), (71, 302868), (94, 228762), (141, 152508), (142, 151434), (179, 120132), (188, 114381), (213, 100956), (282, 76254), (284, 75717), (358, 60066), (423, 50836), (426, 50478), (537, 40044), (564, 38127), (639, 33652), (716, 30033), (846, 25418), (852, 25239), (1074, 20022), (1278, 16826), (1611, 13348), (1692, 12709), (2148, 10011), (2556, 8413), (3222, 6674), (3337, 6444)]