21896420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 57915648

約数和(自身を除く): 36019228

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 53, 65, 70, 91, 106, 130, 140, 182, 212, 227, 260, 265, 364, 371, 454, 455, 530, 689, 742, 908, 910, 1060, 1135, 1378, 1484, 1589, 1820, 1855, 2270, 2756, 2951, 3178, 3445, 3710, 4540, 4823, 5902, 6356, 6890, 7420, 7945, 9646, 11804, 12031, 13780, 14755, 15890, 19292, 20657, 24062, 24115, 29510, 31780, 41314, 48124, 48230, 59020, 60155, 82628, 84217, 96460, 103285, 120310, 156403, 168434, 206570, 240620, 312806, 336868, 413140, 421085, 625612, 782015, 842170, 1094821, 1564030, 1684340, 2189642, 3128060, 4379284, 5474105, 10948210, 21896420]

約数ペア:

[(1, 21896420), (2, 10948210), (4, 5474105), (5, 4379284), (7, 3128060), (10, 2189642), (13, 1684340), (14, 1564030), (20, 1094821), (26, 842170), (28, 782015), (35, 625612), (52, 421085), (53, 413140), (65, 336868), (70, 312806), (91, 240620), (106, 206570), (130, 168434), (140, 156403), (182, 120310), (212, 103285), (227, 96460), (260, 84217), (265, 82628), (364, 60155), (371, 59020), (454, 48230), (455, 48124), (530, 41314), (689, 31780), (742, 29510), (908, 24115), (910, 24062), (1060, 20657), (1135, 19292), (1378, 15890), (1484, 14755), (1589, 13780), (1820, 12031), (1855, 11804), (2270, 9646), (2756, 7945), (2951, 7420), (3178, 6890), (3445, 6356), (3710, 5902), (4540, 4823)]