20743380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 73067904

約数和(自身を除く): 52324524

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 101, 105, 126, 140, 163, 180, 202, 210, 252, 303, 315, 326, 404, 420, 489, 505, 606, 630, 652, 707, 815, 909, 978, 1010, 1141, 1212, 1260, 1414, 1467, 1515, 1630, 1818, 1956, 2020, 2121, 2282, 2445, 2828, 2934, 3030, 3260, 3423, 3535, 3636, 4242, 4545, 4564, 4890, 5705, 5868, 6060, 6363, 6846, 7070, 7335, 8484, 9090, 9780, 10269, 10605, 11410, 12726, 13692, 14140, 14670, 16463, 17115, 18180, 20538, 21210, 22820, 25452, 29340, 31815, 32926, 34230, 41076, 42420, 49389, 51345, 63630, 65852, 68460, 82315, 98778, 102690, 115241, 127260, 148167, 164630, 197556, 205380, 230482, 246945, 296334, 329260, 345723, 460964, 493890, 576205, 592668, 691446, 740835, 987780, 1037169, 1152410, 1382892, 1481670, 1728615, 2074338, 2304820, 2963340, 3457230, 4148676, 5185845, 6914460, 10371690, 20743380]

約数ペア:

[(1, 20743380), (2, 10371690), (3, 6914460), (4, 5185845), (5, 4148676), (6, 3457230), (7, 2963340), (9, 2304820), (10, 2074338), (12, 1728615), (14, 1481670), (15, 1382892), (18, 1152410), (20, 1037169), (21, 987780), (28, 740835), (30, 691446), (35, 592668), (36, 576205), (42, 493890), (45, 460964), (60, 345723), (63, 329260), (70, 296334), (84, 246945), (90, 230482), (101, 205380), (105, 197556), (126, 164630), (140, 148167), (163, 127260), (180, 115241), (202, 102690), (210, 98778), (252, 82315), (303, 68460), (315, 65852), (326, 63630), (404, 51345), (420, 49389), (489, 42420), (505, 41076), (606, 34230), (630, 32926), (652, 31815), (707, 29340), (815, 25452), (909, 22820), (978, 21210), (1010, 20538), (1141, 18180), (1212, 17115), (1260, 16463), (1414, 14670), (1467, 14140), (1515, 13692), (1630, 12726), (1818, 11410), (1956, 10605), (2020, 10269), (2121, 9780), (2282, 9090), (2445, 8484), (2828, 7335), (2934, 7070), (3030, 6846), (3260, 6363), (3423, 6060), (3535, 5868), (3636, 5705), (4242, 4890), (4545, 4564)]