28622920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{563}}^1$

素因数の和:646

約数の個数: 64

約数和(自身を含む): 68221440

約数和(自身を除く): 39598520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 563, 620, 820, 1126, 1240, 1271, 1640, 2252, 2542, 2815, 4504, 5084, 5630, 6355, 10168, 11260, 12710, 17453, 22520, 23083, 25420, 34906, 46166, 50840, 69812, 87265, 92332, 115415, 139624, 174530, 184664, 230830, 349060, 461660, 698120, 715573, 923320, 1431146, 2862292, 3577865, 5724584, 7155730, 14311460, 28622920]

約数ペア:

[(1, 28622920), (2, 14311460), (4, 7155730), (5, 5724584), (8, 3577865), (10, 2862292), (20, 1431146), (31, 923320), (40, 715573), (41, 698120), (62, 461660), (82, 349060), (124, 230830), (155, 184664), (164, 174530), (205, 139624), (248, 115415), (310, 92332), (328, 87265), (410, 69812), (563, 50840), (620, 46166), (820, 34906), (1126, 25420), (1240, 23083), (1271, 22520), (1640, 17453), (2252, 12710), (2542, 11260), (2815, 10168), (4504, 6355), (5084, 5630)]