40890280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{311}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 97718400

約数和(自身を除く): 56828120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 173, 190, 311, 346, 380, 622, 692, 760, 865, 1244, 1384, 1555, 1730, 2488, 3110, 3287, 3460, 5909, 6220, 6574, 6920, 11818, 12440, 13148, 16435, 23636, 26296, 29545, 32870, 47272, 53803, 59090, 65740, 107606, 118180, 131480, 215212, 236360, 269015, 430424, 538030, 1022257, 1076060, 2044514, 2152120, 4089028, 5111285, 8178056, 10222570, 20445140, 40890280]

約数ペア:

[(1, 40890280), (2, 20445140), (4, 10222570), (5, 8178056), (8, 5111285), (10, 4089028), (19, 2152120), (20, 2044514), (38, 1076060), (40, 1022257), (76, 538030), (95, 430424), (152, 269015), (173, 236360), (190, 215212), (311, 131480), (346, 118180), (380, 107606), (622, 65740), (692, 59090), (760, 53803), (865, 47272), (1244, 32870), (1384, 29545), (1555, 26296), (1730, 23636), (2488, 16435), (3110, 13148), (3287, 12440), (3460, 11818), (5909, 6920), (6220, 6574)]