16980140

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 36959328

約数和(自身を除く): 19979188

約数列:

[1, 2, 4, 5, 10, 20, 53, 83, 106, 166, 193, 212, 265, 332, 386, 415, 530, 772, 830, 965, 1060, 1660, 1930, 3860, 4399, 8798, 10229, 16019, 17596, 20458, 21995, 32038, 40916, 43990, 51145, 64076, 80095, 87980, 102290, 160190, 204580, 320380, 849007, 1698014, 3396028, 4245035, 8490070, 16980140]

約数ペア:

[(1, 16980140), (2, 8490070), (4, 4245035), (5, 3396028), (10, 1698014), (20, 849007), (53, 320380), (83, 204580), (106, 160190), (166, 102290), (193, 87980), (212, 80095), (265, 64076), (332, 51145), (386, 43990), (415, 40916), (530, 32038), (772, 21995), (830, 20458), (965, 17596), (1060, 16019), (1660, 10229), (1930, 8798), (3860, 4399)]