19995540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9007}}^1$

素因数の和:9056

約数の個数: 48

約数和(自身を含む): 57507072

約数和(自身を除く): 37511532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9007, 18014, 27021, 36028, 45035, 54042, 90070, 108084, 135105, 180140, 270210, 333259, 540420, 666518, 999777, 1333036, 1666295, 1999554, 3332590, 3999108, 4998885, 6665180, 9997770, 19995540]

約数ペア:

[(1, 19995540), (2, 9997770), (3, 6665180), (4, 4998885), (5, 3999108), (6, 3332590), (10, 1999554), (12, 1666295), (15, 1333036), (20, 999777), (30, 666518), (37, 540420), (60, 333259), (74, 270210), (111, 180140), (148, 135105), (185, 108084), (222, 90070), (370, 54042), (444, 45035), (555, 36028), (740, 27021), (1110, 18014), (2220, 9007)]