20631240

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2729}}^1$

素因数の和:2756

約数の個数: 128

約数和(自身を含む): 78624000

約数和(自身を除く): 57992760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2729, 3780, 5458, 7560, 8187, 10916, 13645, 16374, 19103, 21832, 24561, 27290, 32748, 38206, 40935, 49122, 54580, 57309, 65496, 73683, 76412, 81870, 95515, 98244, 109160, 114618, 122805, 147366, 152824, 163740, 171927, 191030, 196488, 229236, 245610, 286545, 294732, 327480, 343854, 368415, 382060, 458472, 491220, 515781, 573090, 589464, 687708, 736830, 764120, 859635, 982440, 1031562, 1146180, 1375416, 1473660, 1719270, 2063124, 2292360, 2578905, 2947320, 3438540, 4126248, 5157810, 6877080, 10315620, 20631240]

約数ペア:

[(1, 20631240), (2, 10315620), (3, 6877080), (4, 5157810), (5, 4126248), (6, 3438540), (7, 2947320), (8, 2578905), (9, 2292360), (10, 2063124), (12, 1719270), (14, 1473660), (15, 1375416), (18, 1146180), (20, 1031562), (21, 982440), (24, 859635), (27, 764120), (28, 736830), (30, 687708), (35, 589464), (36, 573090), (40, 515781), (42, 491220), (45, 458472), (54, 382060), (56, 368415), (60, 343854), (63, 327480), (70, 294732), (72, 286545), (84, 245610), (90, 229236), (105, 196488), (108, 191030), (120, 171927), (126, 163740), (135, 152824), (140, 147366), (168, 122805), (180, 114618), (189, 109160), (210, 98244), (216, 95515), (252, 81870), (270, 76412), (280, 73683), (315, 65496), (360, 57309), (378, 54580), (420, 49122), (504, 40935), (540, 38206), (630, 32748), (756, 27290), (840, 24561), (945, 21832), (1080, 19103), (1260, 16374), (1512, 13645), (1890, 10916), (2520, 8187), (2729, 7560), (3780, 5458)]