131261940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{19709}}^1$

素因数の和:19761

約数の個数: 72

約数和(自身を含む): 408943080

約数和(自身を除く): 277681140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3330, 6660, 19709, 39418, 59127, 78836, 98545, 118254, 177381, 197090, 236508, 295635, 354762, 394180, 591270, 709524, 729233, 886905, 1182540, 1458466, 1773810, 2187699, 2916932, 3547620, 3646165, 4375398, 6563097, 7292330, 8750796, 10938495, 13126194, 14584660, 21876990, 26252388, 32815485, 43753980, 65630970, 131261940]

約数ペア:

[(1, 131261940), (2, 65630970), (3, 43753980), (4, 32815485), (5, 26252388), (6, 21876990), (9, 14584660), (10, 13126194), (12, 10938495), (15, 8750796), (18, 7292330), (20, 6563097), (30, 4375398), (36, 3646165), (37, 3547620), (45, 2916932), (60, 2187699), (74, 1773810), (90, 1458466), (111, 1182540), (148, 886905), (180, 729233), (185, 709524), (222, 591270), (333, 394180), (370, 354762), (444, 295635), (555, 236508), (666, 197090), (740, 177381), (1110, 118254), (1332, 98545), (1665, 78836), (2220, 59127), (3330, 39418), (6660, 19709)]