81687980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{2459}}^1$

素因数の和:2630

約数の個数: 48

約数和(自身を含む): 188455680

約数和(自身を除く): 106767700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 151, 220, 302, 604, 755, 1510, 1661, 2459, 3020, 3322, 4918, 6644, 8305, 9836, 12295, 16610, 24590, 27049, 33220, 49180, 54098, 108196, 135245, 270490, 371309, 540980, 742618, 1485236, 1856545, 3713090, 4084399, 7426180, 8168798, 16337596, 20421995, 40843990, 81687980]

約数ペア:

[(1, 81687980), (2, 40843990), (4, 20421995), (5, 16337596), (10, 8168798), (11, 7426180), (20, 4084399), (22, 3713090), (44, 1856545), (55, 1485236), (110, 742618), (151, 540980), (220, 371309), (302, 270490), (604, 135245), (755, 108196), (1510, 54098), (1661, 49180), (2459, 33220), (3020, 27049), (3322, 24590), (4918, 16610), (6644, 12295), (8305, 9836)]