89001980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{349}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 192628800

約数和(自身を除く): 103626820

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 311, 349, 410, 622, 698, 820, 1244, 1396, 1555, 1745, 3110, 3490, 6220, 6980, 12751, 14309, 25502, 28618, 51004, 57236, 63755, 71545, 108539, 127510, 143090, 217078, 255020, 286180, 434156, 542695, 1085390, 2170780, 4450099, 8900198, 17800396, 22250495, 44500990, 89001980]

約数ペア:

[(1, 89001980), (2, 44500990), (4, 22250495), (5, 17800396), (10, 8900198), (20, 4450099), (41, 2170780), (82, 1085390), (164, 542695), (205, 434156), (311, 286180), (349, 255020), (410, 217078), (622, 143090), (698, 127510), (820, 108539), (1244, 71545), (1396, 63755), (1555, 57236), (1745, 51004), (3110, 28618), (3490, 25502), (6220, 14309), (6980, 12751)]