256548320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{761}}^1$

素因数の和:833

約数の個数: 144

約数和(自身を含む): 722394288

約数和(自身を除く): 465845968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 49, 56, 70, 80, 86, 98, 112, 140, 160, 172, 196, 215, 224, 245, 280, 301, 344, 392, 430, 490, 560, 602, 688, 761, 784, 860, 980, 1120, 1204, 1376, 1505, 1522, 1568, 1720, 1960, 2107, 2408, 3010, 3044, 3440, 3805, 3920, 4214, 4816, 5327, 6020, 6088, 6880, 7610, 7840, 8428, 9632, 10535, 10654, 12040, 12176, 15220, 16856, 21070, 21308, 24080, 24352, 26635, 30440, 32723, 33712, 37289, 42140, 42616, 48160, 53270, 60880, 65446, 67424, 74578, 84280, 85232, 106540, 121760, 130892, 149156, 163615, 168560, 170464, 186445, 213080, 229061, 261784, 298312, 327230, 337120, 372890, 426160, 458122, 523568, 596624, 654460, 745780, 852320, 916244, 1047136, 1145305, 1193248, 1308920, 1491560, 1603427, 1832488, 2290610, 2617840, 2983120, 3206854, 3664976, 4581220, 5235680, 5966240, 6413708, 7329952, 8017135, 9162440, 12827416, 16034270, 18324880, 25654832, 32068540, 36649760, 51309664, 64137080, 128274160, 256548320]

約数ペア:

[(1, 256548320), (2, 128274160), (4, 64137080), (5, 51309664), (7, 36649760), (8, 32068540), (10, 25654832), (14, 18324880), (16, 16034270), (20, 12827416), (28, 9162440), (32, 8017135), (35, 7329952), (40, 6413708), (43, 5966240), (49, 5235680), (56, 4581220), (70, 3664976), (80, 3206854), (86, 2983120), (98, 2617840), (112, 2290610), (140, 1832488), (160, 1603427), (172, 1491560), (196, 1308920), (215, 1193248), (224, 1145305), (245, 1047136), (280, 916244), (301, 852320), (344, 745780), (392, 654460), (430, 596624), (490, 523568), (560, 458122), (602, 426160), (688, 372890), (761, 337120), (784, 327230), (860, 298312), (980, 261784), (1120, 229061), (1204, 213080), (1376, 186445), (1505, 170464), (1522, 168560), (1568, 163615), (1720, 149156), (1960, 130892), (2107, 121760), (2408, 106540), (3010, 85232), (3044, 84280), (3440, 74578), (3805, 67424), (3920, 65446), (4214, 60880), (4816, 53270), (5327, 48160), (6020, 42616), (6088, 42140), (6880, 37289), (7610, 33712), (7840, 32723), (8428, 30440), (9632, 26635), (10535, 24352), (10654, 24080), (12040, 21308), (12176, 21070), (15220, 16856)]