72166220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{349}}^1$

素因数の和:583

約数の個数: 72

約数和(自身を含む): 177634800

約数和(自身を除く): 105468580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 211, 245, 349, 422, 490, 698, 844, 980, 1055, 1396, 1477, 1745, 2110, 2443, 2954, 3490, 4220, 4886, 5908, 6980, 7385, 9772, 10339, 12215, 14770, 17101, 20678, 24430, 29540, 34202, 41356, 48860, 51695, 68404, 73639, 85505, 103390, 147278, 171010, 206780, 294556, 342020, 368195, 515473, 736390, 1030946, 1472780, 2061892, 2577365, 3608311, 5154730, 7216622, 10309460, 14433244, 18041555, 36083110, 72166220]

約数ペア:

[(1, 72166220), (2, 36083110), (4, 18041555), (5, 14433244), (7, 10309460), (10, 7216622), (14, 5154730), (20, 3608311), (28, 2577365), (35, 2061892), (49, 1472780), (70, 1030946), (98, 736390), (140, 515473), (196, 368195), (211, 342020), (245, 294556), (349, 206780), (422, 171010), (490, 147278), (698, 103390), (844, 85505), (980, 73639), (1055, 68404), (1396, 51695), (1477, 48860), (1745, 41356), (2110, 34202), (2443, 29540), (2954, 24430), (3490, 20678), (4220, 17101), (4886, 14770), (5908, 12215), (6980, 10339), (7385, 9772)]