20347980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19949}}^1$

素因数の和:19978

約数の個数: 48

約数和(自身を含む): 60328800

約数和(自身を除く): 39980820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19949, 39898, 59847, 79796, 99745, 119694, 199490, 239388, 299235, 339133, 398980, 598470, 678266, 1017399, 1196940, 1356532, 1695665, 2034798, 3391330, 4069596, 5086995, 6782660, 10173990, 20347980]

約数ペア:

[(1, 20347980), (2, 10173990), (3, 6782660), (4, 5086995), (5, 4069596), (6, 3391330), (10, 2034798), (12, 1695665), (15, 1356532), (17, 1196940), (20, 1017399), (30, 678266), (34, 598470), (51, 398980), (60, 339133), (68, 299235), (85, 239388), (102, 199490), (170, 119694), (204, 99745), (255, 79796), (340, 59847), (510, 39898), (1020, 19949)]