21507408

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11489}}^1$

素因数の和:11516

約数の個数: 60

約数和(自身を含む): 64826580

約数和(自身を除く): 43319172

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11489, 22978, 34467, 45956, 68934, 91912, 103401, 137868, 149357, 183824, 206802, 275736, 298714, 413604, 448071, 551472, 597428, 827208, 896142, 1194856, 1344213, 1654416, 1792284, 2389712, 2688426, 3584568, 5376852, 7169136, 10753704, 21507408]

約数ペア:

[(1, 21507408), (2, 10753704), (3, 7169136), (4, 5376852), (6, 3584568), (8, 2688426), (9, 2389712), (12, 1792284), (13, 1654416), (16, 1344213), (18, 1194856), (24, 896142), (26, 827208), (36, 597428), (39, 551472), (48, 448071), (52, 413604), (72, 298714), (78, 275736), (104, 206802), (117, 183824), (144, 149357), (156, 137868), (208, 103401), (234, 91912), (312, 68934), (468, 45956), (624, 34467), (936, 22978), (1872, 11489)]