393856240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:231

約数の個数: 120

約数和(自身を含む): 975205440

約数和(自身を除く): 581349200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 47, 62, 80, 94, 109, 124, 155, 188, 218, 235, 248, 310, 376, 436, 470, 496, 545, 620, 752, 872, 940, 961, 1090, 1240, 1457, 1744, 1880, 1922, 2180, 2480, 2914, 3379, 3760, 3844, 4360, 4805, 5123, 5828, 6758, 7285, 7688, 8720, 9610, 10246, 11656, 13516, 14570, 15376, 16895, 19220, 20492, 23312, 25615, 27032, 29140, 33790, 38440, 40984, 45167, 51230, 54064, 58280, 67580, 76880, 81968, 90334, 102460, 104749, 116560, 135160, 158813, 180668, 204920, 209498, 225835, 270320, 317626, 361336, 409840, 418996, 451670, 523745, 635252, 722672, 794065, 837992, 903340, 1047490, 1270504, 1588130, 1675984, 1806680, 2094980, 2541008, 3176260, 3613360, 4189960, 4923203, 6352520, 8379920, 9846406, 12705040, 19692812, 24616015, 39385624, 49232030, 78771248, 98464060, 196928120, 393856240]

約数ペア:

[(1, 393856240), (2, 196928120), (4, 98464060), (5, 78771248), (8, 49232030), (10, 39385624), (16, 24616015), (20, 19692812), (31, 12705040), (40, 9846406), (47, 8379920), (62, 6352520), (80, 4923203), (94, 4189960), (109, 3613360), (124, 3176260), (155, 2541008), (188, 2094980), (218, 1806680), (235, 1675984), (248, 1588130), (310, 1270504), (376, 1047490), (436, 903340), (470, 837992), (496, 794065), (545, 722672), (620, 635252), (752, 523745), (872, 451670), (940, 418996), (961, 409840), (1090, 361336), (1240, 317626), (1457, 270320), (1744, 225835), (1880, 209498), (1922, 204920), (2180, 180668), (2480, 158813), (2914, 135160), (3379, 116560), (3760, 104749), (3844, 102460), (4360, 90334), (4805, 81968), (5123, 76880), (5828, 67580), (6758, 58280), (7285, 54064), (7688, 51230), (8720, 45167), (9610, 40984), (10246, 38440), (11656, 33790), (13516, 29140), (14570, 27032), (15376, 25615), (16895, 23312), (19220, 20492)]