640255560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{108887}}^1$

素因数の和:108915

約数の個数: 96

約数和(自身を含む): 2234381760

約数和(自身を除く): 1594126200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 108887, 217774, 326661, 435548, 544435, 653322, 762209, 871096, 1088870, 1306644, 1524418, 1633305, 2177740, 2286627, 2613288, 3048836, 3266610, 3811045, 4355480, 4573254, 5335463, 6097672, 6533220, 7622090, 9146508, 10670926, 11433135, 13066440, 15244180, 16006389, 18293016, 21341852, 22866270, 26677315, 30488360, 32012778, 42683704, 45732540, 53354630, 64025556, 80031945, 91465080, 106709260, 128051112, 160063890, 213418520, 320127780, 640255560]

約数ペア:

[(1, 640255560), (2, 320127780), (3, 213418520), (4, 160063890), (5, 128051112), (6, 106709260), (7, 91465080), (8, 80031945), (10, 64025556), (12, 53354630), (14, 45732540), (15, 42683704), (20, 32012778), (21, 30488360), (24, 26677315), (28, 22866270), (30, 21341852), (35, 18293016), (40, 16006389), (42, 15244180), (49, 13066440), (56, 11433135), (60, 10670926), (70, 9146508), (84, 7622090), (98, 6533220), (105, 6097672), (120, 5335463), (140, 4573254), (147, 4355480), (168, 3811045), (196, 3266610), (210, 3048836), (245, 2613288), (280, 2286627), (294, 2177740), (392, 1633305), (420, 1524418), (490, 1306644), (588, 1088870), (735, 871096), (840, 762209), (980, 653322), (1176, 544435), (1470, 435548), (1960, 326661), (2940, 217774), (5880, 108887)]