81400340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{2539}}^1$

素因数の和:2784

約数の個数: 48

約数和(自身を含む): 196291200

約数和(自身を除く): 114890860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 916, 1145, 1603, 2290, 2539, 3206, 4580, 5078, 6412, 8015, 10156, 12695, 16030, 17773, 25390, 32060, 35546, 50780, 71092, 88865, 177730, 355460, 581431, 1162862, 2325724, 2907155, 4070017, 5814310, 8140034, 11628620, 16280068, 20350085, 40700170, 81400340]

約数ペア:

[(1, 81400340), (2, 40700170), (4, 20350085), (5, 16280068), (7, 11628620), (10, 8140034), (14, 5814310), (20, 4070017), (28, 2907155), (35, 2325724), (70, 1162862), (140, 581431), (229, 355460), (458, 177730), (916, 88865), (1145, 71092), (1603, 50780), (2290, 35546), (2539, 32060), (3206, 25390), (4580, 17773), (5078, 16030), (6412, 12695), (8015, 10156)]