20332720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6199}}^1$

素因数の和:6253

約数の個数: 40

約数和(自身を含む): 48434400

約数和(自身を除く): 28101680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6199, 12398, 24796, 30995, 49592, 61990, 99184, 123980, 247960, 254159, 495920, 508318, 1016636, 1270795, 2033272, 2541590, 4066544, 5083180, 10166360, 20332720]

約数ペア:

[(1, 20332720), (2, 10166360), (4, 5083180), (5, 4066544), (8, 2541590), (10, 2033272), (16, 1270795), (20, 1016636), (40, 508318), (41, 495920), (80, 254159), (82, 247960), (164, 123980), (205, 99184), (328, 61990), (410, 49592), (656, 30995), (820, 24796), (1640, 12398), (3280, 6199)]