2778820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{743}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 6749568

約数和(自身を除く): 3970748

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 743, 748, 935, 1486, 1870, 2972, 3715, 3740, 7430, 8173, 12631, 14860, 16346, 25262, 32692, 40865, 50524, 63155, 81730, 126310, 138941, 163460, 252620, 277882, 555764, 694705, 1389410, 2778820]

約数ペア:

[(1, 2778820), (2, 1389410), (4, 694705), (5, 555764), (10, 277882), (11, 252620), (17, 163460), (20, 138941), (22, 126310), (34, 81730), (44, 63155), (55, 50524), (68, 40865), (85, 32692), (110, 25262), (170, 16346), (187, 14860), (220, 12631), (340, 8173), (374, 7430), (743, 3740), (748, 3715), (935, 2972), (1486, 1870)]