21154140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 74500608

約数和(自身を除く): 53346468

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, 103, 105, 126, 140, 163, 180, 206, 210, 252, 309, 315, 326, 412, 420, 489, 515, 618, 630, 652, 721, 815, 927, 978, 1030, 1141, 1236, 1260, 1442, 1467, 1545, 1630, 1854, 1956, 2060, 2163, 2282, 2445, 2884, 2934, 3090, 3260, 3423, 3605, 3708, 4326, 4564, 4635, 4890, 5705, 5868, 6180, 6489, 6846, 7210, 7335, 8652, 9270, 9780, 10269, 10815, 11410, 12978, 13692, 14420, 14670, 16789, 17115, 18540, 20538, 21630, 22820, 25956, 29340, 32445, 33578, 34230, 41076, 43260, 50367, 51345, 64890, 67156, 68460, 83945, 100734, 102690, 117523, 129780, 151101, 167890, 201468, 205380, 235046, 251835, 302202, 335780, 352569, 470092, 503670, 587615, 604404, 705138, 755505, 1007340, 1057707, 1175230, 1410276, 1511010, 1762845, 2115414, 2350460, 3022020, 3525690, 4230828, 5288535, 7051380, 10577070, 21154140]

約数ペア:

[(1, 21154140), (2, 10577070), (3, 7051380), (4, 5288535), (5, 4230828), (6, 3525690), (7, 3022020), (9, 2350460), (10, 2115414), (12, 1762845), (14, 1511010), (15, 1410276), (18, 1175230), (20, 1057707), (21, 1007340), (28, 755505), (30, 705138), (35, 604404), (36, 587615), (42, 503670), (45, 470092), (60, 352569), (63, 335780), (70, 302202), (84, 251835), (90, 235046), (103, 205380), (105, 201468), (126, 167890), (140, 151101), (163, 129780), (180, 117523), (206, 102690), (210, 100734), (252, 83945), (309, 68460), (315, 67156), (326, 64890), (412, 51345), (420, 50367), (489, 43260), (515, 41076), (618, 34230), (630, 33578), (652, 32445), (721, 29340), (815, 25956), (927, 22820), (978, 21630), (1030, 20538), (1141, 18540), (1236, 17115), (1260, 16789), (1442, 14670), (1467, 14420), (1545, 13692), (1630, 12978), (1854, 11410), (1956, 10815), (2060, 10269), (2163, 9780), (2282, 9270), (2445, 8652), (2884, 7335), (2934, 7210), (3090, 6846), (3260, 6489), (3423, 6180), (3605, 5868), (3708, 5705), (4326, 4890), (4564, 4635)]