19689540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25243}}^1$

素因数の和:25268

約数の個数: 48

約数和(自身を含む): 59373888

約数和(自身を除く): 39684348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25243, 50486, 75729, 100972, 126215, 151458, 252430, 302916, 328159, 378645, 504860, 656318, 757290, 984477, 1312636, 1514580, 1640795, 1968954, 3281590, 3937908, 4922385, 6563180, 9844770, 19689540]

約数ペア:

[(1, 19689540), (2, 9844770), (3, 6563180), (4, 4922385), (5, 3937908), (6, 3281590), (10, 1968954), (12, 1640795), (13, 1514580), (15, 1312636), (20, 984477), (26, 757290), (30, 656318), (39, 504860), (52, 378645), (60, 328159), (65, 302916), (78, 252430), (130, 151458), (156, 126215), (195, 100972), (260, 75729), (390, 50486), (780, 25243)]