256216520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2833}}^1$

素因数の和:2887

約数の個数: 128

約数和(自身を含む): 734572800

約数和(自身を除く): 478356280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 34, 35, 38, 40, 56, 68, 70, 76, 85, 95, 119, 133, 136, 140, 152, 170, 190, 238, 266, 280, 323, 340, 380, 476, 532, 595, 646, 665, 680, 760, 952, 1064, 1190, 1292, 1330, 1615, 2261, 2380, 2584, 2660, 2833, 3230, 4522, 4760, 5320, 5666, 6460, 9044, 11305, 11332, 12920, 14165, 18088, 19831, 22610, 22664, 28330, 39662, 45220, 48161, 53827, 56660, 79324, 90440, 96322, 99155, 107654, 113320, 158648, 192644, 198310, 215308, 240805, 269135, 337127, 376789, 385288, 396620, 430616, 481610, 538270, 674254, 753578, 793240, 915059, 963220, 1076540, 1348508, 1507156, 1685635, 1830118, 1883945, 1926440, 2153080, 2697016, 3014312, 3371270, 3660236, 3767890, 4575295, 6405413, 6742540, 7320472, 7535780, 9150590, 12810826, 13485080, 15071560, 18301180, 25621652, 32027065, 36602360, 51243304, 64054130, 128108260, 256216520]

約数ペア:

[(1, 256216520), (2, 128108260), (4, 64054130), (5, 51243304), (7, 36602360), (8, 32027065), (10, 25621652), (14, 18301180), (17, 15071560), (19, 13485080), (20, 12810826), (28, 9150590), (34, 7535780), (35, 7320472), (38, 6742540), (40, 6405413), (56, 4575295), (68, 3767890), (70, 3660236), (76, 3371270), (85, 3014312), (95, 2697016), (119, 2153080), (133, 1926440), (136, 1883945), (140, 1830118), (152, 1685635), (170, 1507156), (190, 1348508), (238, 1076540), (266, 963220), (280, 915059), (323, 793240), (340, 753578), (380, 674254), (476, 538270), (532, 481610), (595, 430616), (646, 396620), (665, 385288), (680, 376789), (760, 337127), (952, 269135), (1064, 240805), (1190, 215308), (1292, 198310), (1330, 192644), (1615, 158648), (2261, 113320), (2380, 107654), (2584, 99155), (2660, 96322), (2833, 90440), (3230, 79324), (4522, 56660), (4760, 53827), (5320, 48161), (5666, 45220), (6460, 39662), (9044, 28330), (11305, 22664), (11332, 22610), (12920, 19831), (14165, 18088)]