20199031720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{442573}}^1$

素因数の和:442754

約数の個数: 64

約数和(自身を含む): 52259137920

約数和(自身を除く): 32060106200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 2282, 3260, 4564, 5705, 6520, 9128, 11410, 22820, 45640, 442573, 885146, 1770292, 2212865, 3098011, 3540584, 4425730, 6196022, 8851460, 12392044, 15490055, 17702920, 24784088, 30980110, 61960220, 72139399, 123920440, 144278798, 288557596, 360696995, 504975793, 577115192, 721393990, 1009951586, 1442787980, 2019903172, 2524878965, 2885575960, 4039806344, 5049757930, 10099515860, 20199031720]

約数ペア:

[(1, 20199031720), (2, 10099515860), (4, 5049757930), (5, 4039806344), (7, 2885575960), (8, 2524878965), (10, 2019903172), (14, 1442787980), (20, 1009951586), (28, 721393990), (35, 577115192), (40, 504975793), (56, 360696995), (70, 288557596), (140, 144278798), (163, 123920440), (280, 72139399), (326, 61960220), (652, 30980110), (815, 24784088), (1141, 17702920), (1304, 15490055), (1630, 12392044), (2282, 8851460), (3260, 6196022), (4564, 4425730), (5705, 3540584), (6520, 3098011), (9128, 2212865), (11410, 1770292), (22820, 885146), (45640, 442573)]