21512088

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 128

約数和(自身を含む): 66124800

約数和(自身を除く): 44612712

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 47, 52, 54, 72, 78, 94, 104, 108, 117, 141, 156, 163, 188, 216, 234, 282, 312, 326, 351, 376, 423, 468, 489, 564, 611, 652, 702, 846, 936, 978, 1128, 1222, 1269, 1304, 1404, 1467, 1692, 1833, 1956, 2119, 2444, 2538, 2808, 2934, 3384, 3666, 3912, 4238, 4401, 4888, 5076, 5499, 5868, 6357, 7332, 7661, 8476, 8802, 10152, 10998, 11736, 12714, 14664, 15322, 16497, 16952, 17604, 19071, 21996, 22983, 25428, 30644, 32994, 35208, 38142, 43992, 45966, 50856, 57213, 61288, 65988, 68949, 76284, 91932, 99593, 114426, 131976, 137898, 152568, 183864, 199186, 206847, 228852, 275796, 298779, 398372, 413694, 457704, 551592, 597558, 796744, 827388, 896337, 1195116, 1654776, 1792674, 2390232, 2689011, 3585348, 5378022, 7170696, 10756044, 21512088]

約数ペア:

[(1, 21512088), (2, 10756044), (3, 7170696), (4, 5378022), (6, 3585348), (8, 2689011), (9, 2390232), (12, 1792674), (13, 1654776), (18, 1195116), (24, 896337), (26, 827388), (27, 796744), (36, 597558), (39, 551592), (47, 457704), (52, 413694), (54, 398372), (72, 298779), (78, 275796), (94, 228852), (104, 206847), (108, 199186), (117, 183864), (141, 152568), (156, 137898), (163, 131976), (188, 114426), (216, 99593), (234, 91932), (282, 76284), (312, 68949), (326, 65988), (351, 61288), (376, 57213), (423, 50856), (468, 45966), (489, 43992), (564, 38142), (611, 35208), (652, 32994), (702, 30644), (846, 25428), (936, 22983), (978, 21996), (1128, 19071), (1222, 17604), (1269, 16952), (1304, 16497), (1404, 15322), (1467, 14664), (1692, 12714), (1833, 11736), (1956, 10998), (2119, 10152), (2444, 8802), (2538, 8476), (2808, 7661), (2934, 7332), (3384, 6357), (3666, 5868), (3912, 5499), (4238, 5076), (4401, 4888)]