20407785

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 34387200

約数和(自身を除く): 13979415

約数列:

[1, 3, 5, 15, 23, 69, 115, 149, 345, 397, 447, 745, 1191, 1985, 2235, 3427, 5955, 9131, 10281, 17135, 27393, 45655, 51405, 59153, 136965, 177459, 295765, 887295, 1360519, 4081557, 6802595, 20407785]

約数ペア:

[(1, 20407785), (3, 6802595), (5, 4081557), (15, 1360519), (23, 887295), (69, 295765), (115, 177459), (149, 136965), (345, 59153), (397, 51405), (447, 45655), (745, 27393), (1191, 17135), (1985, 10281), (2235, 9131), (3427, 5955)]