21450335

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 7061665

約数列:

[1, 5, 19, 43, 59, 89, 95, 215, 295, 445, 817, 1121, 1691, 2537, 3827, 4085, 5251, 5605, 8455, 12685, 19135, 26255, 48203, 72713, 99769, 225793, 241015, 363565, 498845, 1128965, 4290067, 21450335]

約数ペア:

[(1, 21450335), (5, 4290067), (19, 1128965), (43, 498845), (59, 363565), (89, 241015), (95, 225793), (215, 99769), (295, 72713), (445, 48203), (817, 26255), (1121, 19135), (1691, 12685), (2537, 8455), (3827, 5605), (4085, 5251)]