21209300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:801

約数の個数: 72

約数和(自身を含む): 53954880

約数和(自身を除く): 32745580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 41, 50, 70, 82, 100, 140, 164, 175, 205, 287, 350, 410, 574, 700, 739, 820, 1025, 1148, 1435, 1478, 2050, 2870, 2956, 3695, 4100, 5173, 5740, 7175, 7390, 10346, 14350, 14780, 18475, 20692, 25865, 28700, 30299, 36950, 51730, 60598, 73900, 103460, 121196, 129325, 151495, 212093, 258650, 302990, 424186, 517300, 605980, 757475, 848372, 1060465, 1514950, 2120930, 3029900, 4241860, 5302325, 10604650, 21209300]

約数ペア:

[(1, 21209300), (2, 10604650), (4, 5302325), (5, 4241860), (7, 3029900), (10, 2120930), (14, 1514950), (20, 1060465), (25, 848372), (28, 757475), (35, 605980), (41, 517300), (50, 424186), (70, 302990), (82, 258650), (100, 212093), (140, 151495), (164, 129325), (175, 121196), (205, 103460), (287, 73900), (350, 60598), (410, 51730), (574, 36950), (700, 30299), (739, 28700), (820, 25865), (1025, 20692), (1148, 18475), (1435, 14780), (1478, 14350), (2050, 10346), (2870, 7390), (2956, 7175), (3695, 5740), (4100, 5173)]