21158760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25189}}^1$

素因数の和:25210

約数の個数: 64

約数和(自身を含む): 72547200

約数和(自身を除く): 51388440

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, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25189, 50378, 75567, 100756, 125945, 151134, 176323, 201512, 251890, 302268, 352646, 377835, 503780, 528969, 604536, 705292, 755670, 881615, 1007560, 1057938, 1410584, 1511340, 1763230, 2115876, 2644845, 3022680, 3526460, 4231752, 5289690, 7052920, 10579380, 21158760]

約数ペア:

[(1, 21158760), (2, 10579380), (3, 7052920), (4, 5289690), (5, 4231752), (6, 3526460), (7, 3022680), (8, 2644845), (10, 2115876), (12, 1763230), (14, 1511340), (15, 1410584), (20, 1057938), (21, 1007560), (24, 881615), (28, 755670), (30, 705292), (35, 604536), (40, 528969), (42, 503780), (56, 377835), (60, 352646), (70, 302268), (84, 251890), (105, 201512), (120, 176323), (140, 151134), (168, 125945), (210, 100756), (280, 75567), (420, 50378), (840, 25189)]