309876980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{316201}}^1$

素因数の和:316224

約数の個数: 36

約数和(自身を含む): 756987588

約数和(自身を除く): 447110608

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 316201, 632402, 1264804, 1581005, 2213407, 3162010, 4426814, 6324020, 8853628, 11067035, 15493849, 22134070, 30987698, 44268140, 61975396, 77469245, 154938490, 309876980]

約数ペア:

[(1, 309876980), (2, 154938490), (4, 77469245), (5, 61975396), (7, 44268140), (10, 30987698), (14, 22134070), (20, 15493849), (28, 11067035), (35, 8853628), (49, 6324020), (70, 4426814), (98, 3162010), (140, 2213407), (196, 1581005), (245, 1264804), (490, 632402), (980, 316201)]