20204520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{359}}^1$

素因数の和:447

約数の個数: 128

約数和(自身を含む): 70502400

約数和(自身を除く): 50297880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 359, 402, 420, 469, 536, 670, 718, 804, 840, 938, 1005, 1077, 1340, 1407, 1436, 1608, 1795, 1876, 2010, 2154, 2345, 2513, 2680, 2814, 2872, 3590, 3752, 4020, 4308, 4690, 5026, 5385, 5628, 7035, 7180, 7539, 8040, 8616, 9380, 10052, 10770, 11256, 12565, 14070, 14360, 15078, 18760, 20104, 21540, 24053, 25130, 28140, 30156, 37695, 43080, 48106, 50260, 56280, 60312, 72159, 75390, 96212, 100520, 120265, 144318, 150780, 168371, 192424, 240530, 288636, 301560, 336742, 360795, 481060, 505113, 577272, 673484, 721590, 841855, 962120, 1010226, 1346968, 1443180, 1683710, 2020452, 2525565, 2886360, 3367420, 4040904, 5051130, 6734840, 10102260, 20204520]

約数ペア:

[(1, 20204520), (2, 10102260), (3, 6734840), (4, 5051130), (5, 4040904), (6, 3367420), (7, 2886360), (8, 2525565), (10, 2020452), (12, 1683710), (14, 1443180), (15, 1346968), (20, 1010226), (21, 962120), (24, 841855), (28, 721590), (30, 673484), (35, 577272), (40, 505113), (42, 481060), (56, 360795), (60, 336742), (67, 301560), (70, 288636), (84, 240530), (105, 192424), (120, 168371), (134, 150780), (140, 144318), (168, 120265), (201, 100520), (210, 96212), (268, 75390), (280, 72159), (335, 60312), (359, 56280), (402, 50260), (420, 48106), (469, 43080), (536, 37695), (670, 30156), (718, 28140), (804, 25130), (840, 24053), (938, 21540), (1005, 20104), (1077, 18760), (1340, 15078), (1407, 14360), (1436, 14070), (1608, 12565), (1795, 11256), (1876, 10770), (2010, 10052), (2154, 9380), (2345, 8616), (2513, 8040), (2680, 7539), (2814, 7180), (2872, 7035), (3590, 5628), (3752, 5385), (4020, 5026), (4308, 4690)]