90999020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1277}}^1$

素因数の和:1802

約数の個数: 48

約数和(自身を含む): 218998080

約数和(自身を除く): 127999060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509, 1018, 1277, 2036, 2545, 2554, 3563, 5090, 5108, 6385, 7126, 8939, 10180, 12770, 14252, 17815, 17878, 25540, 35630, 35756, 44695, 71260, 89390, 178780, 649993, 1299986, 2599972, 3249965, 4549951, 6499930, 9099902, 12999860, 18199804, 22749755, 45499510, 90999020]

約数ペア:

[(1, 90999020), (2, 45499510), (4, 22749755), (5, 18199804), (7, 12999860), (10, 9099902), (14, 6499930), (20, 4549951), (28, 3249965), (35, 2599972), (70, 1299986), (140, 649993), (509, 178780), (1018, 89390), (1277, 71260), (2036, 44695), (2545, 35756), (2554, 35630), (3563, 25540), (5090, 17878), (5108, 17815), (6385, 14252), (7126, 12770), (8939, 10180)]