20569220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:313

約数の個数: 72

約数和(自身を含む): 50944320

約数和(自身を除く): 30375100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 151, 196, 245, 278, 302, 490, 556, 604, 695, 755, 973, 980, 1057, 1390, 1510, 1946, 2114, 2780, 3020, 3892, 4228, 4865, 5285, 6811, 7399, 9730, 10570, 13622, 14798, 19460, 20989, 21140, 27244, 29596, 34055, 36995, 41978, 68110, 73990, 83956, 104945, 136220, 146923, 147980, 209890, 293846, 419780, 587692, 734615, 1028461, 1469230, 2056922, 2938460, 4113844, 5142305, 10284610, 20569220]

約数ペア:

[(1, 20569220), (2, 10284610), (4, 5142305), (5, 4113844), (7, 2938460), (10, 2056922), (14, 1469230), (20, 1028461), (28, 734615), (35, 587692), (49, 419780), (70, 293846), (98, 209890), (139, 147980), (140, 146923), (151, 136220), (196, 104945), (245, 83956), (278, 73990), (302, 68110), (490, 41978), (556, 36995), (604, 34055), (695, 29596), (755, 27244), (973, 21140), (980, 20989), (1057, 19460), (1390, 14798), (1510, 13622), (1946, 10570), (2114, 9730), (2780, 7399), (3020, 6811), (3892, 5285), (4228, 4865)]