20178580072

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1\times {\mathrm{17207}}^1$

素因数の和:17750

約数の個数: 64

約数和(自身を含む): 44338821120

約数和(自身を除く): 24160241048

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 487, 602, 974, 1204, 1948, 2408, 3409, 3896, 6818, 13636, 17207, 20941, 27272, 34414, 41882, 68828, 83764, 120449, 137656, 146587, 167528, 240898, 293174, 481796, 586348, 739901, 963592, 1172696, 1479802, 2959604, 5179307, 5919208, 8379809, 10358614, 16759618, 20717228, 33519236, 41434456, 58658663, 67038472, 117317326, 234634652, 360331787, 469269304, 720663574, 1441327148, 2522322509, 2882654296, 5044645018, 10089290036, 20178580072]

約数ペア:

[(1, 20178580072), (2, 10089290036), (4, 5044645018), (7, 2882654296), (8, 2522322509), (14, 1441327148), (28, 720663574), (43, 469269304), (56, 360331787), (86, 234634652), (172, 117317326), (301, 67038472), (344, 58658663), (487, 41434456), (602, 33519236), (974, 20717228), (1204, 16759618), (1948, 10358614), (2408, 8379809), (3409, 5919208), (3896, 5179307), (6818, 2959604), (13636, 1479802), (17207, 1172696), (20941, 963592), (27272, 739901), (34414, 586348), (41882, 481796), (68828, 293174), (83764, 240898), (120449, 167528), (137656, 146587)]