21075840

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{3659}}^1$

素因数の和:3684

約数の個数: 96

約数和(自身を含む): 72797400

約数和(自身を除く): 51721560

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, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1920, 2880, 3659, 5760, 7318, 10977, 14636, 18295, 21954, 29272, 32931, 36590, 43908, 54885, 58544, 65862, 73180, 87816, 109770, 117088, 131724, 146360, 164655, 175632, 219540, 234176, 263448, 292720, 329310, 351264, 439080, 468352, 526896, 585440, 658620, 702528, 878160, 1053792, 1170880, 1317240, 1405056, 1756320, 2107584, 2341760, 2634480, 3512640, 4215168, 5268960, 7025280, 10537920, 21075840]

約数ペア:

[(1, 21075840), (2, 10537920), (3, 7025280), (4, 5268960), (5, 4215168), (6, 3512640), (8, 2634480), (9, 2341760), (10, 2107584), (12, 1756320), (15, 1405056), (16, 1317240), (18, 1170880), (20, 1053792), (24, 878160), (30, 702528), (32, 658620), (36, 585440), (40, 526896), (45, 468352), (48, 439080), (60, 351264), (64, 329310), (72, 292720), (80, 263448), (90, 234176), (96, 219540), (120, 175632), (128, 164655), (144, 146360), (160, 131724), (180, 117088), (192, 109770), (240, 87816), (288, 73180), (320, 65862), (360, 58544), (384, 54885), (480, 43908), (576, 36590), (640, 32931), (720, 29272), (960, 21954), (1152, 18295), (1440, 14636), (1920, 10977), (2880, 7318), (3659, 5760)]