21640788

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{3557}}^1$

素因数の和:3593

約数の個数: 54

約数和(自身を含む): 59251374

約数和(自身を除く): 37610586

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 169, 234, 338, 468, 507, 676, 1014, 1521, 2028, 3042, 3557, 6084, 7114, 10671, 14228, 21342, 32013, 42684, 46241, 64026, 92482, 128052, 138723, 184964, 277446, 416169, 554892, 601133, 832338, 1202266, 1664676, 1803399, 2404532, 3606798, 5410197, 7213596, 10820394, 21640788]

約数ペア:

[(1, 21640788), (2, 10820394), (3, 7213596), (4, 5410197), (6, 3606798), (9, 2404532), (12, 1803399), (13, 1664676), (18, 1202266), (26, 832338), (36, 601133), (39, 554892), (52, 416169), (78, 277446), (117, 184964), (156, 138723), (169, 128052), (234, 92482), (338, 64026), (468, 46241), (507, 42684), (676, 32013), (1014, 21342), (1521, 14228), (2028, 10671), (3042, 7114), (3557, 6084)]