19957945

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{53}}^2$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 29374380

約数和(自身を除く): 9416435

約数列:

[1, 5, 7, 29, 35, 49, 53, 145, 203, 245, 265, 371, 1015, 1421, 1537, 1855, 2597, 2809, 7105, 7685, 10759, 12985, 14045, 19663, 53795, 75313, 81461, 98315, 137641, 376565, 407305, 570227, 688205, 2851135, 3991589, 19957945]

約数ペア:

[(1, 19957945), (5, 3991589), (7, 2851135), (29, 688205), (35, 570227), (49, 407305), (53, 376565), (145, 137641), (203, 98315), (245, 81461), (265, 75313), (371, 53795), (1015, 19663), (1421, 14045), (1537, 12985), (1855, 10759), (2597, 7685), (2809, 7105)]