21675780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17203}}^1$

素因数の和:17225

約数の個数: 72

約数和(自身を含む): 75147072

約数和(自身を除く): 53471292

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17203, 34406, 51609, 68812, 86015, 103218, 120421, 154827, 172030, 206436, 240842, 258045, 309654, 344060, 361263, 481684, 516090, 602105, 619308, 722526, 774135, 1032180, 1083789, 1204210, 1445052, 1548270, 1806315, 2167578, 2408420, 3096540, 3612630, 4335156, 5418945, 7225260, 10837890, 21675780]

約数ペア:

[(1, 21675780), (2, 10837890), (3, 7225260), (4, 5418945), (5, 4335156), (6, 3612630), (7, 3096540), (9, 2408420), (10, 2167578), (12, 1806315), (14, 1548270), (15, 1445052), (18, 1204210), (20, 1083789), (21, 1032180), (28, 774135), (30, 722526), (35, 619308), (36, 602105), (42, 516090), (45, 481684), (60, 361263), (63, 344060), (70, 309654), (84, 258045), (90, 240842), (105, 206436), (126, 172030), (140, 154827), (180, 120421), (210, 103218), (252, 86015), (315, 68812), (420, 51609), (630, 34406), (1260, 17203)]