89768980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{659}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 221205600

約数和(自身を除く): 131436620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 196, 245, 278, 490, 556, 659, 695, 973, 980, 1318, 1390, 1946, 2636, 2780, 3295, 3892, 4613, 4865, 6590, 6811, 9226, 9730, 13180, 13622, 18452, 19460, 23065, 27244, 32291, 34055, 46130, 64582, 68110, 91601, 92260, 129164, 136220, 161455, 183202, 322910, 366404, 458005, 641207, 645820, 916010, 1282414, 1832020, 2564828, 3206035, 4488449, 6412070, 8976898, 12824140, 17953796, 22442245, 44884490, 89768980]

約数ペア:

[(1, 89768980), (2, 44884490), (4, 22442245), (5, 17953796), (7, 12824140), (10, 8976898), (14, 6412070), (20, 4488449), (28, 3206035), (35, 2564828), (49, 1832020), (70, 1282414), (98, 916010), (139, 645820), (140, 641207), (196, 458005), (245, 366404), (278, 322910), (490, 183202), (556, 161455), (659, 136220), (695, 129164), (973, 92260), (980, 91601), (1318, 68110), (1390, 64582), (1946, 46130), (2636, 34055), (2780, 32291), (3295, 27244), (3892, 23065), (4613, 19460), (4865, 18452), (6590, 13622), (6811, 13180), (9226, 9730)]