20790721305

素因数分解:

$3^3\times 5^1\times {\mathrm{619}}^1\times {\mathrm{248797}}^1$

素因数の和:249430

約数の個数: 32

約数和(自身を含む): 37021142400

約数和(自身を除く): 16230421095

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 619, 1857, 3095, 5571, 9285, 16713, 27855, 83565, 248797, 746391, 1243985, 2239173, 3731955, 6717519, 11195865, 33587595, 154005343, 462016029, 770026715, 1386048087, 2310080145, 4158144261, 6930240435, 20790721305]

約数ペア:

[(1, 20790721305), (3, 6930240435), (5, 4158144261), (9, 2310080145), (15, 1386048087), (27, 770026715), (45, 462016029), (135, 154005343), (619, 33587595), (1857, 11195865), (3095, 6717519), (5571, 3731955), (9285, 2239173), (16713, 1243985), (27855, 746391), (83565, 248797)]