15920640

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{691}}^1$

素因数の和:720

約数の個数: 120

約数和(自身を含む): 55217448

約数和(自身を除く): 39296808

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 691, 720, 768, 960, 1152, 1280, 1382, 1440, 1536, 1920, 2073, 2304, 2560, 2764, 2880, 3455, 3840, 4146, 4608, 5528, 5760, 6219, 6910, 7680, 8292, 10365, 11056, 11520, 12438, 13820, 16584, 20730, 22112, 23040, 24876, 27640, 31095, 33168, 41460, 44224, 49752, 55280, 62190, 66336, 82920, 88448, 99504, 110560, 124380, 132672, 165840, 176896, 199008, 221120, 248760, 265344, 331680, 353792, 398016, 442240, 497520, 530688, 663360, 796032, 884480, 995040, 1061376, 1326720, 1592064, 1768960, 1990080, 2653440, 3184128, 3980160, 5306880, 7960320, 15920640]

約数ペア:

[(1, 15920640), (2, 7960320), (3, 5306880), (4, 3980160), (5, 3184128), (6, 2653440), (8, 1990080), (9, 1768960), (10, 1592064), (12, 1326720), (15, 1061376), (16, 995040), (18, 884480), (20, 796032), (24, 663360), (30, 530688), (32, 497520), (36, 442240), (40, 398016), (45, 353792), (48, 331680), (60, 265344), (64, 248760), (72, 221120), (80, 199008), (90, 176896), (96, 165840), (120, 132672), (128, 124380), (144, 110560), (160, 99504), (180, 88448), (192, 82920), (240, 66336), (256, 62190), (288, 55280), (320, 49752), (360, 44224), (384, 41460), (480, 33168), (512, 31095), (576, 27640), (640, 24876), (691, 23040), (720, 22112), (768, 20730), (960, 16584), (1152, 13820), (1280, 12438), (1382, 11520), (1440, 11056), (1536, 10365), (1920, 8292), (2073, 7680), (2304, 6910), (2560, 6219), (2764, 5760), (2880, 5528), (3455, 4608), (3840, 4146)]