399545360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{5197}}^1$

素因数の和:5272

約数の個数: 60

約数和(自身を含む): 960060204

約数和(自身を除く): 560514844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 961, 1240, 1922, 2480, 3844, 4805, 5197, 7688, 9610, 10394, 15376, 19220, 20788, 25985, 38440, 41576, 51970, 76880, 83152, 103940, 161107, 207880, 322214, 415760, 644428, 805535, 1288856, 1611070, 2577712, 3222140, 4994317, 6444280, 9988634, 12888560, 19977268, 24971585, 39954536, 49943170, 79909072, 99886340, 199772680, 399545360]

約数ペア:

[(1, 399545360), (2, 199772680), (4, 99886340), (5, 79909072), (8, 49943170), (10, 39954536), (16, 24971585), (20, 19977268), (31, 12888560), (40, 9988634), (62, 6444280), (80, 4994317), (124, 3222140), (155, 2577712), (248, 1611070), (310, 1288856), (496, 805535), (620, 644428), (961, 415760), (1240, 322214), (1922, 207880), (2480, 161107), (3844, 103940), (4805, 83152), (5197, 76880), (7688, 51970), (9610, 41576), (10394, 38440), (15376, 25985), (19220, 20788)]