643624430

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{78779}}^1$

素因数の和:78848

約数の個数: 32

約数和(自身を含む): 1247875200

約数和(自身を除く): 604250770

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 4085, 8170, 78779, 157558, 393895, 787790, 1496801, 2993602, 3387497, 6774994, 7484005, 14968010, 16937485, 33874970, 64362443, 128724886, 321812215, 643624430]

約数ペア:

[(1, 643624430), (2, 321812215), (5, 128724886), (10, 64362443), (19, 33874970), (38, 16937485), (43, 14968010), (86, 7484005), (95, 6774994), (190, 3387497), (215, 2993602), (430, 1496801), (817, 787790), (1634, 393895), (4085, 157558), (8170, 78779)]