20010105

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8719}}^1$

素因数の和:8750

約数の個数: 32

約数和(自身を含む): 37670400

約数和(自身を除く): 17660295

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8719, 26157, 43595, 78471, 130785, 148223, 235413, 392355, 444669, 741115, 1177065, 1334007, 2223345, 4002021, 6670035, 20010105]

約数ペア:

[(1, 20010105), (3, 6670035), (5, 4002021), (9, 2223345), (15, 1334007), (17, 1177065), (27, 741115), (45, 444669), (51, 392355), (85, 235413), (135, 148223), (153, 130785), (255, 78471), (459, 43595), (765, 26157), (2295, 8719)]