19927980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110711}}^1$

素因数の和:110726

約数の個数: 36

約数和(自身を含む): 60448752

約数和(自身を除く): 40520772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110711, 221422, 332133, 442844, 553555, 664266, 996399, 1107110, 1328532, 1660665, 1992798, 2214220, 3321330, 3985596, 4981995, 6642660, 9963990, 19927980]

約数ペア:

[(1, 19927980), (2, 9963990), (3, 6642660), (4, 4981995), (5, 3985596), (6, 3321330), (9, 2214220), (10, 1992798), (12, 1660665), (15, 1328532), (18, 1107110), (20, 996399), (30, 664266), (36, 553555), (45, 442844), (60, 332133), (90, 221422), (180, 110711)]