81250820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4877}}^1$

素因数の和:4917

約数の個数: 72

約数和(自身を含む): 210202776

約数和(自身を除く): 128951956

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1666, 2380, 3332, 4165, 4877, 8330, 9754, 16660, 19508, 24385, 34139, 48770, 68278, 82909, 97540, 136556, 165818, 170695, 238973, 331636, 341390, 414545, 477946, 580363, 682780, 829090, 955892, 1160726, 1194865, 1658180, 2321452, 2389730, 2901815, 4062541, 4779460, 5803630, 8125082, 11607260, 16250164, 20312705, 40625410, 81250820]

約数ペア:

[(1, 81250820), (2, 40625410), (4, 20312705), (5, 16250164), (7, 11607260), (10, 8125082), (14, 5803630), (17, 4779460), (20, 4062541), (28, 2901815), (34, 2389730), (35, 2321452), (49, 1658180), (68, 1194865), (70, 1160726), (85, 955892), (98, 829090), (119, 682780), (140, 580363), (170, 477946), (196, 414545), (238, 341390), (245, 331636), (340, 238973), (476, 170695), (490, 165818), (595, 136556), (833, 97540), (980, 82909), (1190, 68278), (1666, 48770), (2380, 34139), (3332, 24385), (4165, 19508), (4877, 16660), (8330, 9754)]