399141740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{1093}}^1$

素因数の和:1183

約数の個数: 72

約数和(自身を含む): 912527280

約数和(自身を除く): 513385540

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 961, 1093, 1178, 1922, 2186, 2356, 2945, 3844, 4372, 4805, 5465, 5890, 9610, 10930, 11780, 18259, 19220, 20767, 21860, 33883, 36518, 41534, 67766, 73036, 83068, 91295, 103835, 135532, 169415, 182590, 207670, 338830, 365180, 415340, 643777, 677660, 1050373, 1287554, 2100746, 2575108, 3218885, 4201492, 5251865, 6437770, 10503730, 12875540, 19957087, 21007460, 39914174, 79828348, 99785435, 199570870, 399141740]

約数ペア:

[(1, 399141740), (2, 199570870), (4, 99785435), (5, 79828348), (10, 39914174), (19, 21007460), (20, 19957087), (31, 12875540), (38, 10503730), (62, 6437770), (76, 5251865), (95, 4201492), (124, 3218885), (155, 2575108), (190, 2100746), (310, 1287554), (380, 1050373), (589, 677660), (620, 643777), (961, 415340), (1093, 365180), (1178, 338830), (1922, 207670), (2186, 182590), (2356, 169415), (2945, 135532), (3844, 103835), (4372, 91295), (4805, 83068), (5465, 73036), (5890, 67766), (9610, 41534), (10930, 36518), (11780, 33883), (18259, 21860), (19220, 20767)]