20717595

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 38555712

約数和(自身を除く): 17838117

約数列:

[1, 3, 5, 9, 15, 23, 37, 45, 69, 111, 115, 185, 207, 333, 345, 541, 555, 851, 1035, 1623, 1665, 2553, 2705, 4255, 4869, 7659, 8115, 12443, 12765, 20017, 24345, 37329, 38295, 60051, 62215, 100085, 111987, 180153, 186645, 300255, 460391, 559935, 900765, 1381173, 2301955, 4143519, 6905865, 20717595]

約数ペア:

[(1, 20717595), (3, 6905865), (5, 4143519), (9, 2301955), (15, 1381173), (23, 900765), (37, 559935), (45, 460391), (69, 300255), (111, 186645), (115, 180153), (185, 111987), (207, 100085), (333, 62215), (345, 60051), (541, 38295), (555, 37329), (851, 24345), (1035, 20017), (1623, 12765), (1665, 12443), (2553, 8115), (2705, 7659), (4255, 4869)]